Unknown Author
Ronald G. Schmidt
International Symposium on Rock Joints (1990 Loen, Norway)
Y. N. T. Maini
Irving Day Scott
Marilyn A. Grout
Hans Peter Rossmanith
Julie A. Roller
Edmund Cecil Harder
S. N. Chernyshev
Stephen Jay Brown
George F. Becker
William J Perry
Herbert S. Bensinger
C. F. Kienle
Robert G. Piepul