Oil and Gas Pipelines in Nontechnical Language, 2nd EditionThomas O. Miesner, William L. Leffler · First published 2020Open the Tome
Oil & Gas Production in Nontechnical LanguageMartin S. Raymond, Dr. William L. Leffler · First published 2017Open the Tome
Oil and Gas Pipelines in Nontechnical LanguageThomas O. Miesner, William L. Leffler · First published 2006Open the Tome
Deepwater petroleum exploration & productionWilliam L. Leffler, Richard Pattarozzi, Gordon Sterling · First published 2003Open the Tome
Petroleum refining for the non-technical personWilliam L. Leffler · First published 1979Open the Tome
The technology and economic behavior of the U.S. propane industryWilliam L. Leffler · First published 1973Open the Tome
