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World Petroleum Congress. Buenos Aires
33
Astronomical Society of the Pacific
12
International Astronomical Union
10
Industrial Waste Conference. Lafayette, Indiana
9
Union Astronomique Internationale
8
International School of Physics Enrico Fermi. Varenna, Italy
5
UNESCO
5
Highway Research Board. Annual Meeting. Washington
4
IGCP Project nº 276. Paleozoic geodynamic domains and their alpidic evolution in the Tethys
4
AIME
3
Biology Colloquium. Corvallis, (Or.))
3
European Astronomical Society
3
Field Meeting. Crete, Greece
3
Gero, John S.
3
International Congress and Exposition
3
Unesco
3
Aceñolaza, Florencio Gilberto
2
Adelman, Saul J.
2
Albanesi, Guillermo L.
2
Annual Road School
2
Archangelsky, Sergio
2
Barnes, Jeannette
2
Biology Colloquium. Corvallis, Or
2
Bruton, D. L.
2
Burggraf, Fred
2
Congress of the Geological Society of Greece. Athens
2
English Language Services
2
Field Meeting. Lausanne, Switzerland
2
Garrison, Robert F.
2
Gratton, Livio
2
Hydraulics Conference. Iowa Institute of Hydraulic Research
2
Industrial waste conference. Lafayette, Indiana
2
Institution of Electrical Engineers (London)
2
Institution of Mechanical Engineers
2
International Association of Geodesy
2
International Astronomical Union = Union Astronomique Internationale. Symposium Rio de Janeiro, Brazil
2
International Congress of Applied Chemistry. London
2
International Geological Congress. Checoslovaquia
2
International Geological Congress. Moscow
2
International Geological Congress. Nueva Delhi
2
International Geological Congress. Sydney, Australia
2
International Reading Association
2
International Symposium on the Ordovician System. Oslo, Norway
2
International Symposium on the Ordovician System. San Juan, Argentina
2
Janes, Kenneth
2
Joint European and National Astronomical Meeting (JENAM)
2
Koenigsberger, F.
2
Lunc, Michal
2
Meeting of PIARC. Paris
2
Merriam, Daniel Francis, 1927-
2
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