00251nam a2200097Ia 4500008004100000041000800041082001800049100001500067245003100082260004000113211209s1977    xx            000 0 und d  aeng  a604.2 N77 MAY  aMAYOCK F B  aTECHNICAL DRAWING OMNIBUS   bHEINEMAN EDUCATION BOOKS LTD.c1977