Costa Rica ... 1960 [this number, by Regis Dunnigan] 

 - Washington, D.C.  Pan American Union, General Secretariat, Organization of American States,  1965 (1960) 
 - 39 pages  photographs, map, tables  18 1 2 cm 
 - American Republics Series  no. 6 .
 - American republics series ;  no. 6. .