| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Natural Gas Liquids: A Nontechnical Guide | 978-1-59370-324-0 | 2014 | |
| Oil & Gas Production in Nontechnical Language | 978-1-59370-052-2 | 2005 | Martin Raymond |
| Petroleum Refining in Nontechnical Language | 978-1-59370-158-1 | 2008 | |
| Petroleum Refining in Nontechnical Language Video Series | 978-1-59370-228-1 | 2010 | |
Dr. William L. Leffler · W.L. · William J. Leffler · William L. · William L. Leffler