00270nam a2200109Ia 4500008004100000041000800041082001600049100001400065245004200079260003100121300000800152211209s1979    xx            000 0 und d  aeng  a510 N79 WAL  aWALSH C E  aWORKED EXAMPLES: APPLIED MATHEMATICS   bCELTIC REVISION AIDSc1979  a108