00286nam a2200109Ia 450000500170000000800410001708200150005810000190007324500430009226000330013530000080016820260224040941.0260224s9999||||xx |||||||||||||| ||und||  a621.03 PBB  aPakistan, B.B. 0aNew mechanical engineering dictionary   aKarachi: Pakistan Book Bank   a740