000 00396nam a2200121Ia 4500
001 MPKV109050
008 120911s9999 xx 000 0 und d
082 _a664
245 _aJournal of the Science of Food and Agriculture Vol 34 A, 34 B Part No.1-6, 7-12
_c;
246 _aJournal of the Science of Food and Agriculture Vol 22
260 _aOxford
_bBlackwell Sci. Pub.
_c1983
650 _aAgronomy
999 _c72396
_d72396