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Circular (United States. Department of Agriculture) no. 443. : Gordon, E. D.
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1937
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1
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Circular (United States. Department of Agriculture) no. 444. : Nuckols, S. B.
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1937
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1
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Circular (United States. Department of Agriculture) no. 445. : Smith, Floyd F.
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1937
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1
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Circular (United States. Department of Agriculture) no. 446. : Heywang, Burt W.
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1937
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1
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Circular (United States. Department of Agriculture) no. 447. : Wright, R. C.
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1937
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1
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Circular (United States. Department of Agriculture) no. 448. : Culley, Matt J.
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1937
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1
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Circular (United States. Department of Agriculture) no. 449.
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1937
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1
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Circular (United States. Department of Agriculture) no. 451. : Sprague, Roderick,
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1937
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1
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Circular (United States. Department of Agriculture) no. 452. : Nelson, O. A.
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1937
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1
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Circular (United States. Department of Agriculture) no. 453. : Meginnis, H. G.
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1937
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1
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Circular (United States. Department of Agriculture) no. 454. : Bengston, John S.
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1938
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1
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Circular (United States. Department of Agriculture) no. 455. : Plummer, C. C.
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1938
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1
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Circular (United States. Department of Agriculture) no. 456. : Sparhawk, William N.
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1937
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1
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Circular (United States. Department of Agriculture) no. 457. : Davis, A. C.
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1938
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1
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Circular (United States. Department of Agriculture) no. 458. : Price, Raymond,
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1938
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1
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Circular (United States. Department of Agriculture) no. 459. : Jones, Thomas Henry,
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1938
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1
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Circular (United States. Department of Agriculture) no. 460. : Kellogg, Charles E.
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1937
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1
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Circular (United States. Department of Agriculture) no. 461. : Belcher, B. A.
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1937
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1
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Circular (United States. Department of Agriculture) no. 462. : Swingle, Millard Curtiss,
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1938
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1
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Circular (United States. Department of Agriculture) no. 463. : Crow, William C.
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1938
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1
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Circular (United States. Department of Agriculture) no. 464. : Burgess, A. F.
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1938
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1
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Circular (United States. Department of Agriculture) no. 465. : Lombard, P. M.
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1938
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1
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Circular (United States. Department of Agriculture) no. 466. : Leatherman, Martin,
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1938
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1
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Circular (United States. Department of Agriculture) no. 467. : Stedronsky, Victor L.
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1938
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1
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Circular (United States. Department of Agriculture) no. 468. : Lloyd, W. A.
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1938
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1
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Circular (United States. Department of Agriculture) no. 469. : Clement, Clarence E.
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1938
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1
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Circular (United States. Department of Agriculture) no. 470. : Hurst, W. M.
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1938
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1
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Circular (United States. Department of Agriculture) no. 471. : Sparhawk, William N.
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1938
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1
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Circular (United States. Department of Agriculture) no. 472. : Russell, E. Z.
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1938
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1
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Circular (United States. Department of Agriculture) no. 473. : Wade, B. L.
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1938
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1
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Circular (United States. Department of Agriculture) no. 474. : Smith, Frank R.,
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1938
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1
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Circular (United States. Department of Agriculture) no. 475. : Park, J. W.
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1938
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1
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Circular (United States. Department of Agriculture) no. 476.
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1938
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1
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Circular (United States. Department of Agriculture) no. 477. : Mathews, O. R.
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1938
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1
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Circular (United States. Department of Agriculture) no. 478. : Bishopp, F. C.
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1938
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1
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Circular (United States. Department of Agriculture) no. 479. : King, C. J.
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1938
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1
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Circular (United States. Department of Agriculture) no. 480.
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1938
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1
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Circular (United States. Department of Agriculture) no. 481. : Hann, Helen Nebeker
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1938
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1
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Circular (United States. Department of Agriculture) no. 482. : Craddock, George W.
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1938
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1
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Circular (United States. Department of Agriculture) no. 483. : Morrison, Bess Viemont,
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1938
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1
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Circular (United States. Department of Agriculture) no. 484.
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1938
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1
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Circular (United States. Department of Agriculture) no. 485. : Berry, Paul A.,
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1938
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1
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Circular (United States. Department of Agriculture) no. 486. : Isaac, Leo A.
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1938
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1
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Circular (United States. Department of Agriculture) no. 487. : Merz, Albert R.
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1938
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1
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Circular (United States. Department of Agriculture) no. 488. : Mervine, E. M.
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1938
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1
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Circular (United States. Department of Agriculture) no. 489. : Helphenstine, R. K.
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1938
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1
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Circular (United States. Department of Agriculture) no. 490. : Dicken, Samuel N.
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1938
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1
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Circular (United States. Department of Agriculture) no. 491. : Savage, D. A.
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1939
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1
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Circular (United States. Department of Agriculture) no. 492. : Skinner, J. J.
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1938
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1
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Circular (United States. Department of Agriculture) no. 493. : Clark, C. F.
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1938
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1
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