00270nam a2200121Ia 4500100002000000650002000020366000700040245002000047260003500067082001500102300000800117546002300125  aBhattacharya/B   aMachine Drawing  f20  aMachine Drawing  bOxford  university pressc2011  a604.2bBHA  a565  aENGLISHcInfo.Tech