(033290) Campbell, John M. Gas Conditioning And Processing [2 Volumes]. Norman, OK: Campbell Petroleum Series, 1976. 4th Edition. Hardcover. 4tos. 310, 348 pages. Very Good+ with no DJ. Charts & Graphs. Dark green boards with gold lettering. . Small neat rubber stamp showing received date on front endpaper. Rubber stamped 'free'on rear endpapers. Volume 1: Phase Behavior, Physical Properties, Energy Changes, Vessel Sizing, Heat Transfer and Fluid Flow. Volume 2: Absorption and Fractionation, Pumping, Compression and Expansion, Refrigeration, Hydrate Inhibition, Dehydration and Process Control (Natural Gas, Gas Industry)