000 00321nam a2200133Ia 4500
008 160316s1949 xxu||||| |||| 00| 0 eng d
020 _a
100 _aJohn H. Martin
245 _aPrinciples Offield Crop Production
250 _a1st
260 _aNEW YORK
_bTHE MACMILLAN COMPANY
_c1949
300 _a1175
700 _a
_a
999 _c33689
_d33689