000 00344 a2200145 4500
001 189
008
082 _a631.52
084 _aQdda.3
100 _aSimmonds, N.W.
245 _aPrinciples of crop improvment
260 _aLondon
_bLongman
_c1979
300 _axiv, 408 s.
653 _aPLANT BREEDING
999 _c12016
_d12016