00258nam a2200109Ia 4500008004100000041000800041082002000049100001500069245004700084260000900131300000800140211209s1975    xx            000 0 und d  aeng  a510 N75 KOP/MAR  aKOPCHENOVA  aCOMPUTATIONAL MATHEMATICS WORKED EXAMPLES   c1975  a397