00341nam a2200133Ia 450000100040000000500170000400800410002102000150006208200120007710000230008924500490011226000300016165000160019115620261006003426.0120911s9999    xx            000 0 und d  a0534933408  a510 LAV  aLavoie, Richard H.  aDiscovering mathematics / Richard H. Lavoie.  aBoston : PWS-KENT, c1993.  aMathematics