000 00294nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aMetcalfe (Darrel S) and Elkins (Donald M)
245 0 _aCrop Production. Ed.4
260 _bMacmillan
260 _c1980
365 _b29.95
942 _cBK
999 _c210970
_d210970