01580cam a22003251 4500 agr68000235 DLC 20260227111030.0 710901s1968 dcub b 000 0 eng c agr68000235 U.S. Nat'l Agr. Libr. DLC DLC n-us--- HD1751 .A5 no. 431 S633 .I17 1Ag84St no. 431 Ibach, D. B. (Donald Bryan), 1900- Crop yield response to fertilizer in the United States [by D. B. Ibach and J. R. Adams. Washington] U.S. Dept. of Agriculture, Economic Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1968] 295 p. map. 29 cm. $1.75 [United States. Dept. of Agriculture] Statistical bulletin no. 431 Cover title. Supersedes U.S. Agricultural Research Service. Farm Economics Research Division. Fertilizer used on crops and pasture in the United States; 1954 estimates, issued as U.S. Dept. of Agriculture, Statistical bulletin, no. 216. Bibliography: p. 11. Fertilizers United States Statistics. Crop yields United States Statistics. Adams, J. Richard (James Richard), 1898- joint author. United States. Agricultural Research Service. Farm Economics Research Division. Fertilizer used on crops and pasture in the United States: 1954 estimates. Statistical bulletin (United States. Department of Agriculture) ; no. 431. 12532 12532