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1977 The 50th Anniversary of the Varig State Airline
1977 The 50th Anniversary of the Varig State Airline
1977 International Thematic Stamp Exhibition “Portucale 77” – Porto, Portugal – Gemstones
1977 International Thematic Stamp Exhibition “Portucale 77” – Porto, Portugal – Gemstones
1977 Day of the Book and Jose de Alencar Commemoration
1977 Day of the Book and Jose de Alencar Commemoration