L.N.???? · W.L. · William L. · William N.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Occupational Health Services: A Guide to Program Planning and Management | 978-1-55648-034-8 (1-55648-034-2) | 1989 |
| Occupational Health Services: Practical Strategies for Improving Quality and Controlling Costs | 978-1-55648-108-6 (1-55648-108-X) | 1993 |