000			00440nam a2200133Ia 4500
008			140224s9999 xx 000 0 und d
082			_a631.527.5 J2
100			_aGowen, John W., ed.
245			_aHeterosis, a record of researches directed toward explaining and utilising the vigor of hybrids
260			_aAmes _bIowa State college press _cc 1952
300			_avii,552p.
650			_aHeterosis,Plant breeding,Hybrid vigour
942			_cBK
999			_c93467 _d93467