Report of the economic and social council :  letter date 17 November 1971 from the permanent representatives of Bulgaria ... 

 - United States :  General Assembly,  1971. 
 - 157 s. ;  28 cm. 
<br/><br/> Poprzednia sygnatura A 649 
<br/><br/><label>Subjects--Index Terms: </label>Bulgaria -- History, 1945-