000 00403 a2200133 4500
080 _a631.42
_bU 58 S
245 1 _aSoil testing in the United States
260 _aWashington
_bUnited States National Soil and Fertilizer Research Committee
_c1951
650 _aSoil Testing
700 _aUnited States National Soil and Fertilizer Research Committee
100 _a
_d
300 _a117 p.
901 _a35047
999 _c43870
_d43870