International co-operation on cartography :  report. 

 - [New York],  1961. 
 - United Nations. [Document] ;  E/3441 .
 - Document (United Nations) ;  E/3441 .
<br/><br/><label>LCCN: </label>62001200 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cartography.<br/>Cartography -- International cooperation.--Cartography -- International cooperation.