00331nam a22001097a 450000500170000008200220001710000210003924500570006026000570011730000100017470000370018420260205150822.0  a	338.13091 KRU.N1  aKrueger, Anne O   aThe political economy of agricultural pricing policy  a	Baltimore: bJohns Hopkins University Press,c1991.  a273p.  aSchiff, Maurice; Valdes, Alberto