South America

1992 Argentine Paintings

1992 United Nations Conference on Environment and Development

1992 Dinosaurs

1992 National Heroes Commemoration

1992 Fungi

1992 National Parks

1992 Argentinian-Brazilian Stamp Exhibition “ARBRAFAEX 2” – Porto Algere, Brazil – Costumes

1991 Birds

1991 Iberia-Latin America Philatelic Literature Exhibition “IBEROPRENFIL” – Buenos Aires

1991 Anniversaries