| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Life of Alexander von Humboldt 2 Volume Set: Compiled in Commemoration of the Centenary of his Birth: 1-2 | 978-1-1O8-O4177-5 (1-1O8-O4177-9) | 2012 |
A.A. · A. L. · L a · R. A. · R A. L. · R. L · Robert A. · Robert Avé-Lallemant · Robert L.