000			00339nam a2200145Ia 4500
008			180613s9999||||xx |||||||||||||| ||und||
020			_a198544363
041			_aen
082			_a631.53
100			_aMAYO, O
245		4	_aThe theory of plant breeding
260			_aGreat britain _bClarendon press _c1980
300			_a293p.
942			_cSR
999			_c83204 _d83204