1979 The Third Inter-American Telecommunications Conference
1979 The Third Inter-American Telecommunications Conference
South America
1979 The 200th Anniversary of the Birth of General Jose de San Martin
1979 The 200th Anniversary of the Birth of General Jose de San Martin
1979 The 100th Anniversary of the Argentine Membership of U.P.U
1979 The 100th Anniversary of the Argentine Membership of U.P.U
1978 The 200th Anniversary of the Birth of General Jose de San Martin
1978 The 200th Anniversary of the Birth of General Jose de San Martin