000			00526cam a2200193 i 4500
005			20251015081039.0
008			780901s1979 enk b 001 0 eng
020			_a0582446309 :
020			_a0582407370
050	0	0	_aSB123 . S5 1979
082	0	0	_a631.5/3
100	1		_aSimmonds, N. W.
245	1	0	_aPrinciples of crop improvement / _cN. W. Simmonds.
260			_aLondon ; _aNew York : _bLongman, _c1979.
300			_axiv, 408 p. : ill. _bhbk
500			_aIncludes indexes.
650		0	_aPlant breeding.
942			_cBK
999			_c25134 _d25134