Hilbert Harry Zuidema
Robert J. Koestler
Hamilton Paul Traub
Chester F. Deaver
M. C. Cooke
Thor A. Söderberg
Dieter O. Hummel
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards
Temple C. Patton
Unknown Author
John G. Reeder
Martens, Charles R.
Ellis, Carleton
A. Nussinovitch
Canada. Industry, Science and Technology Canada.
Roy Lester Whistler
Robert Ingham Clark