Wilbert, Norbert <br/><br/>
A standardized method for identifying and counting the vagile and sessile periphyton.  [electronic resource] 

 -  Oecologia  Dec 1976 
 - 343-347 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1432-1939 
<br/><br/><label>Standard No.: </label>10.1007/BF00381140  doi