000 00281nam a22000977a 4500
100 _a Valdes, Alberto
245 _aSurveillance of agricultural prices and trade: a handbook for Colombia
260 _aWashington, D C,
_b The World Bank
_c1995
300 _a94p.
942 _2ddc
_cUN&WB
999 _c742392
_d742392