Cook Ceridwen <br/><br/>
Practical ecology 
Cook Ceridwen; Slingsby David 
 - London  Macmillan            1986 
 - x,224p  cm. 
 - Dimensions of Science Series .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography Irt Ecology
<br/><br/><label>Dewey Class. No.: </label>U:(G:5), M6