Bulgaria 1970 7th World Congress of Sociology, Varna

From Stamps of the World
  • Issue Date : 14 September 1970
  • Designed by : St. Kanchev
  • Circulation : 120,000
  • Print Process :
  • Stamp Size :
  • Perforations : 12½
  • Bulgarian Catalog Number : 2097
  • Michel Catalog Number : 2033
Bulgaria 1970 7th World Congress of Sociology, Varna 13st.jpg
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