00978cam a2200325 4500 14464 BD-RjUL 20211208235631.0 140206s1971 fr a b 100 0 eng (BD-RjUL)14516 DLC DLC DLC eng engfre 574.5260911 ECO 1971 Ecology and conservation / ecologie et conservation Unesco Paris Paris : Unesco, 1971 706 p. : illus. ; 27 cm. 76.00F Ecology and conservation. Écologie et conservation, 1 "SC.68/XXIV.1/AF." English and French. Includes bibliographies. Ecology Arctic regions Congresses. 41060 1. 45124 Unesco. 45117 International Geographical Union. 17707 Ecology and conservation, 45125 ddc BK 14464 14464 0 0 ddc 0 1 NFIC RUCL RUCL Reading 1981-11-30 unesco. 0.00 0 574.5260911 ECO 1971 2014-02-06 00:00:00 C-1 2014-02-06 BK