22nd World Orchid Conference, Guayaquil, Ecuador, 8-12 November 2017 : conference proceedings /

Publicado 2019

Actes du 18e Congrès Mondial et Exposition d'orchidées, 11-20 mars 2005 = Proceedings of the 18th World Orchid Conference, March 11-20, 2005 : Dijon - Fance /

Publicado 2005

Proceedings of the Third World Orchid Conference, held in London, May 30-June 22, 1960 /.

Publicado 1960

Proceedings of the Fifth World Orchid Conference /

Publicado 1966

Proceedings of the Eleventh World Orchid Conference : March 1984, Miami, Florida, U.S.A. /

Publicado 1985

Proceedings of the 16th World Orchid Conference : april 1999 /

Publicado 2002

Proceedings of the 6th World Orchid Conference /

Publicado 1971

Proceedings of the 9th World Orchid Conference /

Publicado 1980

Proceedings of the Fourth World Orchid Conference.

Publicado 1963

Erinnerungsbroschüre = Memory booklet /

por Senghas, Karlheinz 1928-2004
Publicado 1975

Proceedings of the 10th World Orchid Conference : 11-17 September 1981, Durban, South Africa /

Publicado 1982

Tagungsbericht der 8. Welt-Orchideen-Konferenz Palmengarten Frankfurt 10. - 17. April 1975 /

Publicado 1976