000 00351 a2200133 4500
080 _a631.4
_bU 58 S
245 1 _aSoil
_bYearbook of agriculture 1957
260 _aWashington
_bUnited States Department of Agriculture
_c1957
650 _aSoil
700 _aUnited States Department of Agriculture
100 _a
_d
300 _a784 p.
901 _a62433
999 _c43625
_d43625