Parc national du Tassili N'Ajjer : conservation exploitation
1987
Bousquet, Bernard |
Natural heritage
ASEAN heritage parks and reserves
1988
Brockelman, Warren Y. |
National park system plan [Natural History] for Greece
1974
Larson, James W. |
Naturdenkmäler im Kanton Bern
1970
Itten, Hans |
Finlandia
1959
Kalliola, Reino |
Nature management in Denmark : objectives results experiences
1992
Jensen, Jorn |
Centro de investigaciones y capacitacion forestales : Cuba manejo y desarrollo integral de las areas naturales y culturales
1974
Miller, Kenton |