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1.
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[Ann Arbor, MI?] : U.S. Environmental Protection Agency, Air and Radiation, Office of Mobile Sources, Regional and State Programs Division, [1999]
EP 4.2: C 73/6 |
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2.
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Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, [1999]
EP 4.8: OZ 7/7 |
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3.
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Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, [1999]
EP 4.8: D 26 |
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4.
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Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards, [1999]
EP 4.2: R 31/7 |
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5.
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Washington : U.S. G.P.O. : For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office, 1999.
Y 4.C 73/8: 106-3 |
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6.
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College Station, Pa. : U.S. Dept. of the Interior ; Denver, CO : Information Services [distributor], 1996.
I 19.76: 96-346 |
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7.
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Research Triangle Park, NC : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, [1998]
EP 4.2: N 63/8 |
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8.
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Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards, [1998]
EP 4.2: C 73/5 |
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9.
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Research Triangle Park, NC : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Air Quality Strategies and Standards Division, Innovative Strategies and Economics Group, [1995]
EP 4.2: IN 2/8 |
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10.
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Research Triangle Park, NC : Emission Factor and Inventory Group, Emissions, Monitoring, and Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, [1996]
EP 4.2: P 94/4 |
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