000 00386 a2200133 4500
082 _a631.4
_bSOI
090 _c21676
_d33756
245 _aSoil
_bthe yearbook of agriculture 1957
260 _aWashington
_bThe United States Department of Agriculture
300 _axiii,784p.
_c22cm
440 _a85th Congress, 1st session, house of document No.30
650 _aSoil science
942 _cL
999 _c49130
_d49130