Sladeckova .A <br/><br/>
Mternational association boretical and applied limnology vol-25 

 -  Stuttgart : E. schweizerbart'  sche verlag1993 
 - xvi), (675 
<br/><br/><label>ISBN: </label>351054039-5 
<br/><br/><label>Dewey Class. No.: </label>551.48