00397nam a2200133Ia 4500008004100000041001200041082001600053100002600069245007400095260004400169300000800213650001500221700002700236221030s9999    xx            000 0 und d  aEnglish  a105.23bCho  aS. K. Hajra Choudhary 0aWorkshop Technologycby S. K. Hajra Choudhary, A. K. Hajra  Choudhary  bMedia Promoters & Pub.aNew Delhic1980  a651  aMechanical  aA. K. Hajra  Choudhary