Chugh, C. (1992). High technology in drilling and exploration: C.P. Chugh. IBH Pub.
Lua i Stíl Chicago (17ú heag.)Chugh, C.P. High Technology in Drilling and Exploration: C.P. Chugh. New Delhi: IBH Pub, 1992.
Lua MLA (9ú heag.)Chugh, C.P. High Technology in Drilling and Exploration: C.P. Chugh. IBH Pub, 1992.
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