Aaron Bancroft
Henri Frankfort
Lierre Keith
Unknown Author
K. H. Head
United States. General Accounting Office
United States. Naval Facilities Engineering Command
National Committee on Soil and Terrain (Australia)
Kenneth Andrew Denholm
David Dent
Edwin F. Tallyn
George Robin Clarke
Washington Agricultural Experiment Station.
David K. Alstatt
I. M. Smith
J. R. Landon
Richard S Jaros
Deborah J. Prevost