Lake Balaton : research and management
1988
Misley, Károly |
Eutrophication
Conservation in developing countries : problems and prospects : proceedings of the centenary seminar
1990
Daniel, J. C. |
Serrao, J. S. |
Freshwater ecology principles and applications
1990
Jeffries, Michael |
Mills, Derek |
Pollution in Lake Titicaca, Peru : training, research and management
1989
Northcote, T. G. |
