000 00356nam a2200121Ia 4500
001 MPKV055239
008 120911s9999 xx 000 0 und d
082 _a338.1
245 _aJournal of Farm EconomicsVol 20
_c;
246 _aJournal of Farm EconomicsVol 20
260 _aUSAR
_bAmerican Farm Economics Association
_c1938
650 _aAgricultural Economics
999 _c53235
_d53235