Unknown Author
R. H. Ellinger
Thomas Raikes
F. B. Weeks
Jukka K. Heinonen
William Clifton Phalen
M.-T Averbuch-Pouchot
P. J. Cook
Alfred Sibson
Great Britain. Ministry of Agriculture and Fisheries.
J. C. Elliott
John L. Burnett
Albert F. Ellis
Rotem Amfert Negev Ltd
Energy, Mines and Resources Canada. Mineral and Earth Sciences Program.
William F. Stowasser
H. Magdi Selim
Patrick Zhang