00377nam a2200133Ia 4500008004100000041000800041082001600049100001600065245003200081260000900113300000700122952009700129999001700226211209s1979    xx            000 0 und d  aeng  a510 N79 PER  aPERKINS E J  aTEACH YOURSELF MATHEMATICS   c1979  a93  00104070aRITbRITd2021-12-31l0o510 N79 PERp14760r2021-12-31 00:00:00w2021-12-31yBK  c14760d14760