00352nam a2200133Ia 4500100003200000650002400032366000700056654001500063245006800078260003700146082001500183300000800198546001200206  aBureau of Indian Standards   aEngineering Drawing  f60  aSP 46:2003  aEngineering Drawing practice for schools and colleges SP46:2003  bBureau of indian standardsc1989  a604.2bBIS  a205  aENGLISH