No author available
· 1987
A. Prechtel, C. Alewell, M. Armbruster, J. Bittersohl, J M. Cullen, C D. Evans, R C. Helliwell, J. Kopacek, E. Matzner, H. Meesenburg, F. Moldan, K. Moritz, J. Vesely, R F. Wright, Water Quality · 2001
C D. Evans, J M. Cullen, C. Alewell, J. Kopacek, A. Marchetto, F. Moldan, A. Prechtel, M. Rogora, J. Vesely, R F. Wright, Water Quality · 2001