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Conservation and Development

International Union for Conservation of Nature and Natural Resources

其他書名	Papers and Proceedings, IUCN's Twelfth Technical Meeting, Banff, Alberta, Canada, 12 to 15 Sept. 1972
出版	IUCN, 1973
URL	http://books.google.com.hk/books?id=WP1lvgEACAAJ&hl=&source=gbs_api