000 00300nam a2200133Ia 4500
008 160316s1981 xxu||||| |||| 00| 0 eng d
020 _a
100 _aNeal C Stoskopf
245 _aUnderstanding Crop Production
250 _a1
260 _aVIRGINIA
_bRESTON
_c1981
300 _a433
700 _a
_a
999 _c25563
_d25563