Potential relaxation of Illinois sulfur dioxide regulations and source-specific emission limits and their effect on the use of Illinois coal /

"October, 1983."

Technical analysis of the state implementation plan for sulfur dioxide in the Peoria area.

"January, 1981."

The Economic impact of revised measurement methods for emissions of sulfur compounds, proposed regulations R87-31 : final report /

"Project: 88/223."

Injury to Northwestern forest trees by sulfur dioxide from smelters /

Caption title.

Sulfur content of rainwater and atmosphere in southern states as related to crop needs /

Caption title.

Sulfur as a plant nutrient in the southern United States /

Caption title.

EPA-approved revisions to state implementation plans allowing increased sulfur dioxide emissions were legal : report to the chairman, Subcommittee on Oversight and Investigations, Committee on Energy and Commerce, House of Representatives /

"B-217221"--1st prelim. p.