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Effects of Chemicals on People and the Environment
In this pamphlet, the author will examine some of the benefits of chemicals to mankind. The author also will examine some of the problems chemicals have caused, are causing and may cause in the future.
Date:
March 1984
Creator:
Dickson, Kenneth L.
Object Type:
Pamphlet
System:
The UNT Digital Library
Aquatic Ecological Classification and Evaluation of Streams and Stream Reaches in the Upper Roanoke River Basin, Virginia
The purpose of this study is to "establish a data base and methodology for classifying...the streams of the Roanoke Basin into a hierarchy of ecological systems" and to "establish evaluative criteria and methodology for classifying and ranking streams within the ecological systems relative to their state of environmental quality" (p. R1).
Date:
March 30, 1979
Creator:
North Texas State University. Institute of Applied Sciences.
Object Type:
Report
System:
The UNT Digital Library