000 00282 a2200121 4500
080 _a633:575.1
_bZ 81 B
245 1 _aBeginnings of plant hybridization
_cby C. Zirkle
260 _c1935
650 _aCrops
650 _aPlant Hybridization
100 1 _aZirkle, C.
_d
901 _a4382
999 _c47139
_d47139