Use and conservation of the biosphere : proceedings of the Intergovernmental Conference of Experts on the scientific basis for rational use and conservation of the resources of the biosphere Paris, 4-13 Sept. 1968.
- Liège : Unesco, c 1970.
- 272 p. ; 23 cm.
Includes index.
323 323
Biosphere
500 / U3u
Includes index.
323 323
Biosphere
500 / U3u