Behrman, D. In partnership with nature:Unesco and the environment - UNESCO 1973 - 111 - Nature conservation Marine environment Man and biosphere ISBN: 92-3-101111-1 = Behrman, D. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 2283 Nat. Bib. Agency Control No.: 577.4 BEH Subjects--Topical Terms: Environmental Sciences Universal Decimal Class. No.: 577.4