RUTTNER, Franz Frey, D.G., tr. <br/><br/>
Fundamentals of limnology 
/[by] Franz Ruttner; translated by D.G.Frey, F.E.J.Fry 
 - Toronto  University of Toronto Press  1953 
 - xiv, 307 p. 
<br/><br/> Includes references, bibliography and index. 
<br/><br/><label>ISBN: </label>802020283 
<br/><br/><label>Dewey Class. No.: </label>551.48  / RUT