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References
1.
American Chemical Society
(1989 ). Chemical and Engineering News , pp. 12 -15 , May 29, 1989 .
2.
U.S. Environmental Protection Agency (Epa).
( 1988 a). 1986 National Air Quality Trend Report. EPA-450/4-88-001 . U.S. EPA .
3.
U.S. Environmental Protection Agency (Epa).
( 1988 b). Environmental Progress and Challenges: EPA's Update, EPA-230-07-88-033 . U.S. EPA .
4.
U.S. Environmental Protection Agency (Epa).
( 1987 ). Unfinished Business: EPA's Assessment of Major Environmental Risks. EPA/230-2-87/025A-E .U.S. EPA .
