000 00273nam a2200085Ia 4500
001 MPKV109352
008 120911s9999 xx 000 0 und d
245 _aCandian Journal of Agricultural Economics Vol. 31
_c;
260 _aOttawa (Canda)
_bAgricultural Fconomics Society
_c1983
999 _c72692
_d72692