- United Nations Environment Programme (10)
- International Workshop on Environmental Management for Local and Regional Development (2)
- UNICEF (2)
- United Nations Centre for Regional Development (2)
- Cooper, Charles (1)
- Food and Agriculture Organization of the United Nations (1)
- Heywood, V. H. (Vernon Hilton), 1927- (1)
- International Union for Conservation of Nature and Natural Resources (1)
- Middleton, Nicholas J. (1)
- Thomas, David S.G. (1)
- Watson, R. T. (1)
- World Health Organization (1)
- World Wide Fund for Nature (1)
- 世界自然保護基金日本委員会 (1)
- 国際食糧農業協会 (1)
- 日本ユニセフ協会 (1)
- 高榎, 尭(1930-) (1)