GARG SANTOSH KUMAR. (2015). ENVIRONMENTAL ENGINEERING SEWAGE DISPOSAL AND AIR POLLUTION ENGINEERING VOL II (33ED.). KHANNA PUBLISHERS.
Lua i Stíl Chicago (17ú heag.)GARG SANTOSH KUMAR. ENVIRONMENTAL ENGINEERING SEWAGE DISPOSAL AND AIR POLLUTION ENGINEERING VOL II. 33ED. NEW DELHI: KHANNA PUBLISHERS, 2015.
Lua MLA (9ú heag.)GARG SANTOSH KUMAR. ENVIRONMENTAL ENGINEERING SEWAGE DISPOSAL AND AIR POLLUTION ENGINEERING VOL II. 33ED. KHANNA PUBLISHERS, 2015.
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