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作者	Betts, Norman De Witt, 1880-1917.

標題 Tests of Rocky Mountain woods for telephone poles / by Norman De W. Betts and A.L. Heim.

出版資料	Washington, D.C. : U.S. Dept. of Agriculture, 1914.

複本

說明	28 p. : ill., maps ; 24 cm.
系列	Bulletin of the U.S. Department of Agriculture ; no. 67
Notes	Caption title.
	"March 17, 1914."
	"Professional paper."
With:	Bound With: Possible agricultural development in Alaska.
主題	Wood poles.
	Forest products -- Rocky Mountains Region.
	Electric lines -- Poles and towers.
添加作者	Heim, A. L. (Arthur Lloyd), 1881-
政府出版物號碼	A 1.3:67