Wetzel, Robert G. <br/><br/>
Limnological analyses / 
by Robert G. Wetzel and Gene E. Likens 
 - 3rd ed. 
 - London :  Springer,  2004. 
<br/><br/><label>ISBN: </label>8181282086 
<br/><br/><label>Subjects--Index Terms: </label>Ecology - Lake Limnological Study Limnology