Danuta Maczak
Ronald Burton Wilkes
Richard Allen La Barge
Claude Levi-Strauss
James F. Childress
W. L. Edge
International Association for Quaternary Research. Congress
Roberto Aliboni
Gasteiner internationalen Symposion (1970)
Michel Steve
Alexandre Misseq
Lugo Juan de Cardinal
Nijhoff Martinus firm booksellers The Hague.
Werner Friedrich Bruck
D. Kh Mushtari
Haralamb Zincă
Louis Bourdaloue
Gillis Bishop
David Pargman
Arthur Lasenby Liberty
Lydio Machado Bandeira de Mello
Computers-in-Law Institute.
Raymund Schwager
Alberto Sívoli G.
David J. Bowman
Henry Hawkins
Julio de la Vega
Christian Friesl
Teruhisa Matsusaka
Colloques Internationaux du Centre National de la Recherche Scientifique (1969 Aix-en-Provence)
Samuel Borofsky
Richard Giesriegl
Paulo Suess
Schnee Heinrich
New England Business and Securities Law Conference (7th 1989 Boston Mass.)
Boris Rybak
Eduard von Hartmann
Georgi Markov
Centre national de la recherche scientifique (France)
Gustav Klein
International Society for Plant Geography and Ecology.
Viggo Mortensen
Raoul Combes
Amédée Louis Ulysse Gasquet
Institut für Wissenschaftstheoretische Grundlagenforschung. Symposion.