00318nam a2200121Ia 4500008004100000020001500041041001200056100001500068245006200083260002800145300000800173650001500181221030s9999    xx            000 0 und d  a8185749620  aEnglish  aP. S. Gill 0aEngineering Drawing  (Geometrical Drawing)cby P. S. Gill  bKatsonaNew Delhic2016  a673  aMechanical