A. Conservation in land-use planning : soil and water resources especially in mountain regions : wildlife resources and forestry. B. Effects of pollution on natural ecosystems. C. Some aspects of wildlife utilization and management. D. International Bi 1970 Elliott, Hugh F. I. |
Bears : their biology and management : a selection of papers and discussion from the second International Conference on Bear Research and Management held at the University of Calgary, Alberta, Canada, 6 to 9 November 1970 1970 Herrero, Stephen |
Proceedings of the Latin American Conference on the Conservation of Renewable Natural Resources, San Carlos de Bariloche, Argentina, 27 March-2 April 1968 1968
Proceedings of a technical meeting on wetland conservation, Ankara, Bursa, Istanbul, 9 to 16 October 1967 1968
Conservation in tropical South East Asia : proceedings of the Conference on Conservation of Nature and Natural Resources in Tropical East Asia, Bangkok, Thailand, November 29 - December 4, 1965 1968 Talbot, Lee M. (Lee Merriam) | Talbot, Martha H. |
Towards a new relationship of man and nature in temperate lands. Part III. Changes due to introduced species 1967
Towards a new relationship of man and nature in temperate lands. Part 2. Town and country planning problems 1967