000 00383nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aYair M
245 _aAgricultural productivity and economic policies : concepts and measurements
260 _c1991
_bO.E.C.D.
_aParis
366 _b1991
650 _aECONOMICS
942 _cBK
999 _c76676
_d76676