Berg, Kaj <br/><br/>
Biological Studies on the River Susaa : No 4 

 - Oslo,  Jacob Dybwad,  1948, 
 - 309p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological<br/>Biological Studies
<br/><br/><label>Dewey Class. No.: </label>574.28  / BER