00427nam a2200169 a 450000500170000002000150001708200200003210000200005210000220007210000190009424500250011325000120013826000240015030000280017449000410020263000140024320251202164310.0  a4833701391  a330.024658bPAP  aPappas, James L  aBrigham, Eugene F  aHirschey, Mark  aManagerial economics  a4th ed.  aNew YorkbCBSc1983  axii, 628 p.c24 cm.bPB  aThe Dryden press series in economics  aEconomics