Method for biological quality assessment of watercourses in Belgium

Hydrobiologia ◽  
1983 ◽  
Vol 100 (1) ◽  
pp. 153-168 ◽  
Author(s):  
Niels De Pauw ◽  
Gerard Vanhooren
1997 ◽  
Vol 24 (7) ◽  
pp. 496-505 ◽  
Author(s):  
E. S. GROSSMAN ◽  
J. M. MATEJKA
Keyword(s):  

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