A basic research on mountain fortress in central inland area of Kore a. 

 - Korea :  Korea Fortress Acadamy,  2007. 
 - 287 p. :  ill., col., maps ;  30 cm. 
<br/><br/>Includes bibliographical references (p.257-266) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mountains-- Korea, Central.
<br/><br/><label>Gov. Doc. Class. No.: </label>G. KOR (02) 2007/1