000 00302 a2200121 4500
080 _a631.4+63(51)
_bR 522 S
245 1 _aSoils and agriculture of Szechwan
_cby H.L. Richardson
260 _aChungking
_c1942
650 _aSoils
650 _aAgriculture
100 1 _aRichardson, H.L.
_d
901 _a13749
999 _c43390
_d43390