Slingsby, David  <br/><br/>
Practical ecology 
David Slingsby, Ceridwen Cook. 
 - Basingstoke:   Macmillan Education,   1986. 
 - 213 pages :    illustrations ;    22 cm. 
<br/><br/><label>ISBN: </label>0333398130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology