Maling,D. H. <br/><br/>
Measurements from Maps:  principles and methods of cartometry/ 
D .H. Maling. 
 -  1989 
 - xxi, 577p.  hbk. 
<br/><br/><label>ISBN: </label>0080302904 
<br/><br/><label>LC Class. No.: </label>GA23.M35 1989