00621cam a22002177a 4500003000500000005001700005008004100022010001000063011001000073020001500083035001000098040000900108082001800117100002000135245007100155260005400226300001100280650003300291650004500324650003400369CHAP20220329141944.0980929 1982    mx      r     00010 spa d  a76231  a77203  a0813805325  a86806  cCHAP04a338.10973bD300aDay, Richard H.10aEconomic analysis and agricultural policyc/by Richard Hollis, Day  aAmes, Iowa ;bIowa State University Press,c1982.  a368 p.14aAgricultura y EstadozE.U.A.14aAgriculturaxAspectos economicoszE.U.A.14aPolítica agrícolazE.U.A.