William L. Leffler

Oil and gas production in nontechnical language

Martin S. Raymond, William L. Leffler, 2006 .

Deepwater Petroleum Exploration & Production: A Nontechnical Guide

William L. Leffler, Richard Pattarozzi, Gordon Sterling, 2003 .

Oil & Gas Pipelines in Nontechnical Language

William L. Leffler, Thomas O. Miesner, 2006 .

Downstream mergers, capacity hikes persist

William L. Leffler, 2007 .

Petroleum Refining in Nontechnical Language

William L. Leffler, W. L. Leffler, 1985 .

Petroleum Refining for the Nontechnical Person

William L. Leffler, W. L. Leffler, 1979 .