00267nam a2200109Ia 4500008004100000041000800041082001600049100001300065245003800078260003300116300000800149211209s1977    xx            000 0 und d  aeng  a510 N70 BOL  aBOLT R L  aREVISION EXAMPLES IN MATHEMATICS   bJ M DENT AND SONS LTD.c1977  a120