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Incorporation of a test for exhaust sulfate emissions into the federal emission testing procedure

Leiferman, Michael W., author.
[Ann Arbor, Mich.] : U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Standards Development and Support Branch, 1975. 1975

Sodium sulphate, its sources and uses

Wells, Roger Clark, 1877-1944, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1923. 1923