01256cam a22003011  4500001001300000003000400013005001700017008004100034010001700075040003600092043001200128070002100140082001600161100002700177245014200204260013900346300002600485490007800511500007200589504002800661650002500689650002100714700003600735700003700771710004300808810008600851999001700937agr68000043 DLC20260227111028.0710901s1967    dcua     b    000 0 eng c  aagr68000043   aU.S. Nat'l Agr. Libr.cDLCdDLC  anp-----0 aA279.9Ag8 no. 1100a631.4/9/7641 aEck, Harold V.,d1924-10aProductivities of horizons of seven benchmark soils of the southern Great Plainsc[by Harold V. Eck, Robert H. Ford, and Carl D. Fanning.  aWashington]bAgricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.,c1967]  a46 p.billus.c23 cm.1 aUnited States. Dept. of Agriculture. Conservation research reportvno. 11  aPrepared in cooperation with Texas Agricultural Experiment Station.  aBibliography: p. 35-36. 0aSoilszGreat Plains. 0aSoilsxAnalysis.1 aFord, Robert H.,ejoint author.1 aFanning, Carl D.,ejoint author.2 aTexas Agricultural Experiment Station.10aUnited States.bDepartment of Agriculture.tConservation research reportvno. 11.  c12357d12357