Jorge Luis Borges
Ramón Barce
Student Association for the Study of Hallucinogens. Annual Symposium (2o. 1972) The
George G Fenich
César Aira
John G. Fisher
American Chemical Society. Division of Petroleum Chemistry.
Mario Teodoro Ramírez
Symposium on Twenty-Five Years of Progress in Petroleum Technology (1951 New York, N.Y.)
ACM Conference on Computer and Communications Security (11th 2004 Washington, D.C.)
Congreso Peruano del Hombre y la Cultura Andina (12th 1998 Huánuco, Peru)
Santiago Gamboa
International Whaling Commission.
Colombia) Conferencia Latinoamericano sobre Desarrollo Urbano (1975 Bogotá
Uva de Aragón
Mercè Viladomiu Canela
Jesus Lau
Silvio Sánchez F.
Jornadas de Heráldica Española (1st 1997 Almería, Spain)
Jornadas Mexicanas de Biblioteconomia (4th 1965 Jalapa)