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作者	Nuckols, S. B. (Samuel Benton), 1887-1970.

標題 Farm practice in growing field crops in three sugar-beet districts of Colorado / by Samuel B. Nuckols and Thomas H. Summers.

出版資料	Washington, D.C. : U.S. Dept. of Agriculture, 1921.

說明	52 p. : ill., 1 map ; 23 cm.
系列	Bulletin / United States Department of Agriculture ; no. 917
	Bulletin of the U.S. Department of Agriculture ; no. 917.
Notes	Caption title.
	"March 11, 1921."
With:	Bound With: Grapevine looper.
主題	Sugar beet -- Colorado.
	Field crops -- Colorado.
添加作者	Summers, Thomas Henry, 1885-
政府出版物號碼	A 1.3:917