00306nam a22000857a 4500100003200000245010900032260002800141300001000169700004100179  aSyed Sadiq Ali Shaha88ME27  aGeneral Study on Crown Wheel and Pinnion Flat 480s Manufactured at Pakistan Machine Tool Factory Karachi  aNawabshahbQUEST,c1993  a111p.  aDepartment of Mechanical Engineering