Book ID: 48819
                                                            
                                                            
                                                                
                                                                    
Whitton, B. A., E. Rott, and G. Friedrich (eds.)
                                                                    
                                                                
                                                            
                                                                 Use of algae for monitoring rivers: proceedings on an international symposium held at Landesamt für Wasser und Abfall Nordrhein- Westfalen, Düsseldorf, germany, 26 - 28 May 1991. illus 193 p. 4to. Broschiert. 
                                                            
                                                            
                                                                                                                            
                                                                    Out of print. Second hand copy.