000 00270 a2200121 4500
080 _a631.4
_bW 425 P
245 1 _aProductive soils
_cby W.W. Weir
260 _aChicago
_c1946
650 _aSoils
100 1 _aWeir, W.W.
_d
300 _a325 p. & 2 plates
901 _a44235
999 _c43631
_d43631