00301nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001200078245004100090250000700131260001300138650001600151768820261006004037.0120911s9999    xx            000 0 und d  a0534945546  a510 EWE  aElementary technical mathematics -6e  a6E  aPWS PUB.  aMathematics