Nature and resources : newsletter about scientific research on environment, resources and conservation of nature : bulletin of the International Hydrological Decade /
- Paris : Unesco, 1968.
- Vols. ; 28 cm.
V. 4- conference on the resources of the biosphere symposium on continental draft by J.T. Wilson ;
60 60
Hydrology -- Periodicals.
Natural resources -- Periodicals.
333 / U3n
V. 4- conference on the resources of the biosphere symposium on continental draft by J.T. Wilson ;
60 60
Hydrology -- Periodicals.
Natural resources -- Periodicals.
333 / U3n