Septième Réunion technique, Athènes, 11-19 sept. 1958. 4. Soil and water conservation

Hellas) International Union for Conservation of Nature and Natural Resources. Natural aquatic resources (7th: 1958 Athen
Bok · Engelsk · 1959
Flere språk: Fransk

Annen tittel	Conservation du Sol et de l'Eau
Utgitt	Brüssel : La Union , 1959
Omfang	374 s. : ill.
Emner	Conservation of natural resources - Congresses Nature conservation - Congresses Rare animals - Congresses - Mediterranean Region Rare plants - Congresses - Mediterranean Region Vis mer... Soil conservation - Congresses Water conservation - Congresses