Chugh, C P .
Manual of drilling technology / Textual Documents C P Chugh. - 1 / . - New Delhi : Oxonian Press Pvt Ltd , 1985. - 567 ; .
028.72622 / CHU/MA
Manual of drilling technology / Textual Documents C P Chugh. - 1 / . - New Delhi : Oxonian Press Pvt Ltd , 1985. - 567 ; .
028.72622 / CHU/MA