Advanced Waste Treatment Research Laboratory; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,

[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,

Clean Air Technology Center (MD-12), Information Transfer Group, Office of Air Quality [Planning] and Standards, U.S. Environmental Protection Agency,

U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards ; U.S. Environmental Protection Agency, Office of Research and Development ; National Technical Information Service [distributor],

For sale by the Supt. of Docs., U.S. Govt. Print. Off.,

Federal Small Business Assistance Program, Information Transfer and Program Integration Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency,

Emission Factor and Inventory Group, Emissions, Monitoring, and Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency,

Emission Factor and Inventory Group, Emissions, Monitoring, And Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency,

U.S. Environmental Protection Agency, Region II,

Information Transfer and Program Integration Division (ITPID), Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency,