000 00285nam a2200121Ia 4500
001 MPKV051151
008 120911s9999 xx 000 0 und d
082 _a630
245 _aAgriculture Vol 79
_c;
246 _aAgriculture Vol 79
260 _aLondon
_bHMSO
_c1972
650 _aAgronomy
999 _c49156
_d49156