00959cam a2200289 4500 4107787 BD-DhUL 20161208192818.0 710528s1970 fr b 100 0 eng 75024233 F*** BD-DhUL BD-DhUL S912 .I57 1968 572 UNE Unesco Intergovernmental Conference of Experts on the Scientific Basis for Rational Use and Conservation of the Resources of the Biosphere, Paris, 1968. Use and conservation of the biosphere : proceedings / Paris : Unesco, 1970. 272 p. 24 cm. Natural resources research, 10 SC.69/XII.16/A. Includes bibliographies. Conservation of natural resources Congresses. Unesco. [Document] SC.69/XII.16/A Natural resources research ; 10. ddc BK 133374 133374 0 0 ddc 0 572_000000000000000_UNE 0 NFIC 250663 DUL DUL GEN 2016-12-08 Gift 572 UNE A94321 2016-12-08 2016-12-08 BK