000 00302nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
020 _a8179190015
082 _a575.222.78
_bRAI
100 _aRai, B
245 0 _aHeterosis breeding
260 _aDelhi
_bAgro-Biological Publications
_c1979
942 _cBK
999 _c42646
_d42646