WILLIAM L. ALLEN EDITOR ETC <br/><br/>
NATIONAL GEOGRAPHIC JULY 1998 

 - 初版 
 - U.S.A.  NATIONAL GEOGRAPHIC SOCIETY  1998 
 -  135 
 - VOL. 194 NO.1 1998 .
<br/><br/><label>ISBN: </label>ISSN 0027-9358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>连续性出版品; 期刊--NATIONAL GEOGRAPHIC
<br/><br/><label>Dewey Class. No.: </label>050.8 NG v.07 1998