|
[A1] |
Cómo Cagar en el monte |
| |
Kathleen Meyer |
| |
Desnivel, 2001 |
|
[A3] |
Cooperation in the European Mountains - 3: The sustainable management of climbing areas in Europe |
| |
Brigitte Hanemann |
| |
IUCN - The World Conservation Union 2000, 2000 |
|
|
[A2] |
El país frágil - Las montañas deben sobreviver |
| |
Rosa Fernández Arroyo |
| |
Desnivel, 1996 |
|
