National plan of action to combat desertification in the Hashemite Kingdom of Jordan
1987
Environmental surveys
Natsionalna dopovid pro stan navkolichnogo prirodnogo sjerjedovishcha v Ukraini
1993
Chishchyenko, P. G. |
The Government of the Hungarian Republic : national report to the United Nations Conference on Environment and Development, 1992
1991
Bulla, Miklós |
State of the Hungarian environment
1990
Hinrichsen, Don |
Enyedi, György |