00258nam a2200109Ia 4500008004100000020001800041041000800059100002500067245002700092260002100119300000800140230822s1989    xx            000 0 und d  a9780000000000  aeng  aSCHILLING ALEXANDER.  aBASICS MODEL BUILDING.  bBIRKHAUSERc1989  a657