Peter Watts
Anita Ganeri
Hughes, D. J.
Michael J. Kennish
R. V. Tait
Thomas J. M. Schopf
Unknown Author
Robert J. Weimer
George Dellagiarino
C. Hans Nelson
International Geological Congress (26th 1980 Paris, France)
Steele, John H.
Margaret Deacon
Erickson, Jon
R. Stein
Michael John Keen
G. Boillot
H.L. Davies