The management of the wilder areas of the national parks
1990
Tourism impact
Narodny Park Sagarmatha : serpovia a ich krajina pod Mount Everestom
1987
Drdos, Ján |
Vegetationskundliche Untersuchungen im Ozegahara-Moor, Mittel-Japan
1970
Miyawaki, Akira |
Fujiwara, Kazue |
Zborník prác o Tatranskom národnom parku
1990
Seman, Karol |
Fábry, Jozef |
Valorisation des milieux tropicaux par la conservation de la faune sauvage
1977
Lauginie, Francis |