00338nam a2200133 a 450000500170000002000150001708200210003210000190005324500410007225000120011326000340012530000230015970000220018220251203091548.0  a0030753929  a330.024658,bhir  aHirschey, Mark  aFundamentals of managerial economics  a4th ed.  aFortworth: Dryden Pressc1992  axxii,714p.c24 cm.  aPappas, James, L.