Johnston,Carol A. <br/><br/>
Geographic information systems in ecology / 
Johnston,Carol A. 
 - London:  Blackwell,  1998. 
 - vii,233p;23cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0632038594 
<br/><br/><label>Dewey Class. No.: </label>574.5 JOH