Accepted Limit Values of Air Pollutants

Sizes

Square
75 X 75
Thumbnail
69 X 90
Small
300 X 386
Medium
700 X 900
Large
930 X 1196
Extra Large
1500 X 1930

Barkley, J. F. Accepted Limit Values of Air Pollutants. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc67065/. Accessed August 29, 2014.