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	1.	No cover image available No cover image available Oil & gas pipelines in nontechnical language [electronic resource] / Thomas O. Miesner and William L. Leffler. by Miesner, Thomas O Leffler, William L ProQuest (Firm) Material type: Text; Format: electronic ; Literary form: Not fiction Publication details: Tulsa, Okla. : PennWell Corp., c2006 Other title: Oil and gas pipelines in nontechnical language Online resources: Click to View Availability: No items available. Add to cart (remove)
	2.	No cover image available No cover image available Deepwater petroleum exploration & production [electronic resource] : a nontechnical guide / William L. Leffler, Richard Pattarozzi, Gordon Sterling. by Leffler, William L Pattarozzi, Richard Sterling, Gordon ProQuest (Firm) Material type: Text; Format: electronic ; Literary form: Not fiction Publication details: Tulsa, Okla. : PennWell, c2003 Other title: Deepwater petroleum exploration and production Online resources: Click to View Availability: No items available. Add to cart (remove)
	3.	No cover image available No cover image available Oil and gas production in nontechnical language [electronic resource] / Martin S. Raymond and William L. Leffler. by Raymond, Martin Leffler, William L ProQuest (Firm) Material type: Text; Format: electronic ; Literary form: Not fiction Publication details: Tulsa, Okla. : PennWell Corporation, c2006 Online resources: Click to View Availability: No items available. Add to cart (remove)
	4.	No cover image available No cover image available Petrochemicals in nontechnical language [electronic resource] / Donald L. Burdick, William L. Leffler. by Burdick, Donald L Leffler, William L ProQuest (Firm) Edition: 4th ed. Material type: Text; Format: electronic ; Literary form: Not fiction Publication details: Tulsa, OK : PennWell Corp., c2010 Online resources: Click to View Availability: No items available. Add to cart (remove)
	5.	No cover image available No cover image available Deepwater petroleum exploration & production [electronic resource] : a nontechnical guide / William L. Leffler, Richard Pattarozzi, Gordon Sterling. by Leffler, William L Pattarozzi, Richard Sterling, Gordon ProQuest (Firm) Edition: 2nd ed. Material type: Text; Format: electronic ; Literary form: Not fiction Publication details: Tulsa, Okla. : PennWell Corp., c2011 Other title: Deepwater petroleum exploration and production Online resources: Click to View Availability: No items available. Add to cart (remove)
	6.	No cover image available No cover image available Natural gas liquids : a nontechnical guide / William L. Leffler ; book designer, Susan E. Ormston ; cover designer, Karla Womack. by Leffler, William L [author.] Ormston, Susan E [book designer.] Womack, Karla [cover designer.] Material type: Text; Literary form: Not fiction Publisher: Tulsa, Oklahoma : PennWell Corporation, 2014Copyright date: �2014 Online resources: Click to View Availability: No items available. Add to cart (remove)

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