Richard Norris
Jianzhuang Xiao
Ontario Geological Survey. Engineering and Terrain Geology Section.
Underwood, McLellan & Associates.
Dante J. E. Veronelli
Unknown Author
Victor Saouma
Department of the Environment Staff Great Britain
R. N. Swamy
Anjun Qin
David A. Lindsey
Frederick C. Schmutz
E. J. Lee