00349nam a22001457a 4500003000400000005001700004008004100021020001800062040002000080100001700100245003800117250001700155260002300172300000800195OSt20241017160506.0241017b        |||||||| |||| 00| 0 eng d  a9789352837373  cIIMT University  aDhawan, R.K.  aA Textbook of Engineering Drawing  a3rd Rev. Ed.  aNew Delhi; S.Chand  a766