00249nam a2200097Ia 4500100003000000654002400030245004000054260002900094082001600123546001200139  aLuzadder/W.J/ Duff /J.M.   aEngineering drawing  aFundamentals of Engineering drawing  bP.H.I.aNew  Delhic1994  a604.24bPAN  aENGLISH