| Author | Titles | | 1.
| Leffingwell, Edward, 1941-2014 | 1 | | 2.
| Leffingwell, Edward G., 1941-2014 | 0 | | 3.
| Author is: Leffingwell, Edward, 1941-2014 | 1 | | 4.
| Leffson, August | 1 | | 5.
| Lefkowith, Christie Mayer | 1 | | 6.
| Lefkowitz, Louis J. | 1 | | 7.
| Leflocq, Jules | 1 | | 8.
| Lefol, Gaston | 1 | | 9.
| Lefort, Claude | 3 | | 10.
| Lefort, Guy | 1 | | 11.
| Lefort, Paul | 4 |
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