00271nam a2200109Ia 4500008004100000041000800041082001600049100002000065245003300085260003500118300000800153211209s1989    xx            000 0 und d  aeng  a720 N89 IDE  aIDECS PUB. INC.  aARKITEX-1 ONTARIO PRACTICES   aTORONTObINDECS PUB. INCc1989  a192