Usher M B <br/><br/>
Biological management and conservation 

 - London  Chapman and Hall U K        1973 
 - xiii,394p. Bib p. 372-85 Appendix p. 365-71  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modern - Geography
<br/><br/><label>Dewey Class. No.: </label>U:(G:5), L3