000 00347nam a2200121Ia 4500
001 MPKV112445
008 120911s9999 xx 000 0 und d
082 _a630
245 _aExperimental Agriculture Vol 25 No.1-4
_c;
246 _aExperimental Agriculture Vol 10 No.1-4
260 _aLondon
_bCambridge University Press
_c1989
650 _aAgronomy
999 _c75723
_d75723