000 00250nam a2200085Ia 4500
001 MPKV108797
008 120911s9999 xx 000 0 und d
245 _aJournal of Agricutural Science Vol. 109 Part : 1-3
_c;
260 _aLondan
_bCambridge Univ.
_c1987
999 _c72148
_d72148