000 00387nam a2200145Ia 4500
008 140208s9999 xx 000 0 und d
020 _a9780582455863
044 _aUnited Kingdom
080 _a631.52 S48P
100 _aSimmonds, N.W.
245 _aPrinciples of crop improvement
_cN.W. Simmonds
260 _bLongman
_aLondon
_c1979
300 _axiv, 408 p.; 22cm.
942 _2udc
_cGB
999 _c10814
_d10814