1979 “Prenfil 80” – International Exhibition of Philatelic Literature and Journalism, Buenos Aires
1979 “Prenfil 80” – International Exhibition of Philatelic Literature and Journalism, Buenos Aires
Argentina
1979 “Prenfil 80” – International Exhibition of Philatelic Literature and Journalism, Buenos Aires
1979 “Prenfil 80” – International Exhibition of Philatelic Literature and Journalism, Buenos Aires
1979 The 100th Anniversary of the Birth of General Enrique Mosconi
1979 The 100th Anniversary of the Birth of General Enrique Mosconi
1979 The 100th Anniversary of the Military Geographical Institute
1979 The 100th Anniversary of the Military Geographical Institute
1979 The 75th Anniversary of the Rosario Philatelic Society
1979 The 75th Anniversary of the Rosario Philatelic Society