Biological assessment of water quality in the river trent watershed : report of the Dutch participants in the E.E.C.-seminar at Nottingham, September/October 1976 [Boek]
The seminar at Nottingham in september/october 1976 was organized to achieve two objectives: a. Comparison of the sampling methods used by each participating country b. Comparison of methods of biological assessment of water quality. Twenty four samp ...