Guiné Bissau : conservaçao da diversidade biológica
1989
WWF International
Nature sauvage dans l'est africain : journal d'un voyage en Afrique orientale
1967
Vaucher, Charles A. |
Forests in trouble : a review of the status of temperate forests worldwide
1992
Dudley, Nigel |
A resource inventory of the proposed Luzon's highest Mountains national park : a detailed survey leading to the development of a management plan
1977
Yankus, Glen L. |
Eakle, Thomas W. |
Palis, Felicitos V. |
Arevalo, Ernie A. |
Parque nacional de la Caldera de Taburiente isla de La Palma
1976
Arozarena Villar, Antonio |
Hernan Valero, Miguel |
Vega Hidalgo, José Antonio |