00292nam a2200109Ia 4500008004100000020001400041245004500055250001200100260002600112260001000138300003400148191206s9999    xx            000 0 und d  a256020795 0aManagerial economics: analysis and cases  a4th ed.  aBusiness Publications  cc1978  a"xvi, 708 p. : ill. ; 24 cm."