TY  - BOOK
AU  - Van Der Werff , A.                                          
TI  - Diatomeenflora a Van Netherland(Diatom Flora of the Netherlands)                                                        
U1  - 581.0212  VAN                  
PY  - 1976///
CY  - West Germany                                                
PB  - Koeltz Science Publishers                                   
ER  -