00398nam a2200133Ia 4500008004100000082001600041100001700057245007500074260004000149300000800189650002900197653002300226700001500249170901s1953    xx            000 0 und d  a744.4bH46S  aHealy, W. L. 0aSimplified Drafting PracticebA Modern Approach to Industrial Drafting  aNew YorkbJohn Wiley and Sonsc1953  a156  aFine and Decorative Arts  aMechanical drawing  aRau, A. H.