Smithy, Robert Leo. <br/><br/>
Ecology and field biology. 

 - 5th ed. 
 - Menlo Park :  Addison,  1996. 
 - xix, 740 pages :  :illustrations (some color) 
<br/><br/>Includes Bibliographical reference, index and glossary. 
<br/><br/><label>ISBN: </label>0065009762 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Biology--Fieldwork.<br/>Ecology.<br/>Biology--Fieldwork.