| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Interpretive Centers: The History, Design and Development of Nature and Visitor Centers | 978-O-93231O-44-6 (O-93231O-44-3) | 2002 | Ronald Zimmerman |
M G*** · M. Gross · M.P. · Michael G · Michael Gross · Michael P. · P.G. · P. Gross