D B · Darrel B. Hoff · H B · H.D.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Contemporary Activities in Astronomy: A Process Approach | 978-0-7575-6691-2 (0-7575-6691-X) | 2009 | WILKERSON JEFFREY A |
| CONTEMPORARY ACTIVITIES IN ASTRONOMY: A PROCESS APPROACH | 978-0-7575-3150-7 (0-7575-3150-4) | 2006 | " |