00375nam a2200145   45000010005000000030003000050050017000080080041000250350018000660350017000840500023001011000020001242450050001442600035001949532UR20220428183146.0061102|||||||||||||||||||||||||||||||| d  a(janium) 9521  a(janium)9521 4aHB171.5b.S25 19741 aSampson, Roy J.10aEconomicsb : concepts applications  analysis  bHoughton Mifflin companyc1974