00504nam a22001937a 450000500170000001000110001703500110002803700170003904000120005608200150006810000190008324500680010226000430017027000080021330000200022150000200024165000250026165000240028620170124110012.0  a198699  a198699  bCen Lib/ Ret  aDPLbEN  a338.1bHEA  aHeady, Earl O.  aAgricultural policy under economic development /cbyEarl OHeady  aUSAbLowa state university pressc1962  bUSA  a682p.c21cm(Hb)  aIncludes index   aEconomic development  aAgricultural policy