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Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsMichel BatisseMichel Batisse is senior environmental advisor with the United Nations Educational, Scientific and Cultural Organization (UNESCO), 7 place de Fontenoy, 75352 Paris 07 SP France (tel: 011-33-1-45-68-10-00). The author wishes to thank Jane Robertson-Verhnes from UNESCO's Division of Ecological Sciences for her useful comments on a first draft of this article.
Michel Batisse (Sun,) studied this question.