00273nam a2200109Ia 4500008004100000041000800041082001600049100001800065245002800083260004400111300000800155211209s1975    xx            000 0 und d  aeng  a510 N75 ZAM  aZAMMERUDDIN Q  aELEMENTARY MATHEMATICS   aNEW DELHIbVIKAS PUBLISHING HOUSEc1975  a293