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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

The recovery of sulfur from naturally occurring sulfates I : the reduction of gypsum

Gonser, John E.
1952. 1952