1990 America – Pre-Columbian Artefacts WM: 5 1990 Anniversaries WM: 5 1990 Football World Cup – Italy WM: 5 1990 Football World Cup – Italy 1990 Football World Cup – Italy 1990 The 5th Population Census and 4th Housing Census WM: 5 1990 The 5th Population Census and 4th Housing Census WM: 5 1990 Tourism WM: 5 1990 Tourism WM: 5 1990 The 30th Anniversary of Organization of Petroleum Exporting Countries WM: 5 1990 The 30th Anniversary of Organization for Preservation of Traditional Handicrafts WM: 5 1990 The 30th Anniversary of Organization for Preservation of Traditional Handicrafts 1990 Flowers WM: 5 1991 America – World found by the Discoverers WM: 5 1991 The 50th Anniversary of National Journalists’ Federation WM: 5 1991 The 50th Anniversary of Radio Quito WM: 5 1991 The 100th Anniversary of the Birth of Dr. Pablo Arturo Suarez WM: 5 1991 America – Discovery Travel WM: 5 1991 Archaeology – La Tolita Culture WM: 5 1991 No Violence to Women Day WM: 5 1991 Visit of President Jaime Paz Zamora of Bolivia WM: 5 1991 The 100th Anniversary of the Birth of Jacinto Jijon y Caamano, 1890-1950 WM: 5