Nature and resources : 1990 : Bulletin of the International Hydrological Decade /
Nature & resources
Unesco.
- UNESCO.
- v. ; 27 cm.
- Quarterly
- v. 1- June 1965-
Issues for <1989-> have title: Nature & resources. "Bulletin of the International Hydrological Decade." Each volume also has a distinctive title.
Vol. 24 complete in one no.; issue for 1989 called Special issue, but constitutes v. 25.
Also issued in French, Spanish, Chinese, and Russian language eds.