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.
Intergovernmental Conference of Experts on the Scientific Basis for Rational Use and Conservation of the Resources of the Biosphere(1968 :Paris, France)
Calder, Ritchie,1906-1982,former owner.StEdNL
Unesco.
"Paris, 4-13 September 1968."
"SC. 69/XII. 16/A."
Includes bibliographical references.
Conservation of natural resources
Conservation of natural resources.