000 00287nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aWalden (David B) Ed
245 0 _aMaize breeding and genetics
260 _b"John witely, USA"
260 _c1978
365 _b49.95
942 _cBK
999 _c203487
_d203487