Miles L. Croom
Robert H. Avery
Brown, R. C.
Midwest Research Institute (Kansas City, Mo.)
K. L Ladd
Charles M. Hunt
J. D. McKenna
Burton Schuster
C. N. Davies
Japan. Keizai Sangyōshō
Unknown Author
Joseph S. Devinny
James H. Turner
Federal Construction Council. Task Group T-28 on Selection and Maintenance of Air Filters.
Charles Norman Davies
Humphrey Gilbert
Ingo Nietzold
Herbert M. Decker