National geographic  [electronic resource]. 
 National geographic magazine 

 - [Washington, D.C.] :  National Geographic Society,  �1959- 
 - Monthly 
 - Vol. 116, no. 6 (Dec. 1959)- 
<br/><br/> Title from cover. 
<br/><br/>Some issues called "Special report," "Special edition" or "Special issue." Issued in two yearly vols. of 6 issues each. 
<br/><br/>Some issues accompanied by supplements. 
<br/><br/>Official journal of: National Geographic Society. 
<br/><br/> Indexes kept up-to-date with supplements.  Vols. 91 (1947)-161 (1983). 1 v. (Includes index to the journal under its earlier title); v. 1 (1888)-174 (1988). 1 v. (Includes index to the journal under its earlier title). 
<br/><br/><label>ISSN: </label>1931-1524 
 = National geographic 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photojournalism--Periodicals.<br/>Geography--Periodicals.
<br/><br/><label>Subjects--Index Terms: </label>Geography - Periodicals