01580cam a22003251  4500001001300000003000400013005001700017008004100034010001700075040003600092043001200128050002400140051001500164070002000179100004100199245009300240260013500333300002500468350001000493490007200503500001700575500022800592504002500820650004400845650004400889700006200933710016200995830008001157999001701237agr68000235 DLC20260227111030.0710901s1968    dcub     b    000 0 eng c  aagr68000235   aU.S. Nat'l Agr. Libr.cDLCdDLC  an-us---00aHD1751b.A5 no. 431  aS633b.I170 a1Ag84St no. 4311 aIbach, D. B.q(Donald Bryan),d1900-10aCrop yield response to fertilizer in the United Statesc[by D. B. Ibach and J. R. Adams.  aWashington]bU.S. Dept. of Agriculture, Economic Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.,c1968]  a295 p.bmap.c29 cm.  a$1.751 a[United States. Dept. of Agriculture] Statistical bulletinvno. 431  aCover title.  aSupersedes 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.  aBibliography: p. 11. 0aFertilizerszUnited StatesxStatistics. 0aCrop yieldszUnited StatesxStatistics.1 aAdams, J. Richardq(James Richard),d1898-ejoint author.1 aUnited States.bAgricultural Research Service.bFarm Economics Research Division.tFertilizer used on crops and pasture in the United States: 1954 estimates. 0aStatistical bulletin (United States. Department of Agriculture) ;vno. 431.  c12532d12532