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1
بواسطة Covello, Vincent T.
Cincinnati, OH : National Homeland Security Research Center, Office of Research and Development, U.S. Environmental Protection Agency, 2007

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وثيقة رسمية كتاب
2
Washington, DC : Cincinnati, OH : Office of Solid Waste and Emergency Response, U.S. Environmental Protection Agency ; Risk Reduction Engineering Laboratory and Center for Environmental Research Information, Office of Research and Development, U.S. Environmental Protection Agency, 1989

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وثيقة رسمية كتاب
3
Cincinnati, OH : Center for Environmental Research Information, National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1997

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وثيقة رسمية كتاب
4
Lancaster, Pa. : Technomic Publishing Co., 1990

كتاب
5
بواسطة Grimsrud, G Paul
Washington : U.S. Environmental Protection Agency, Office of Research and Development : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976

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كتاب
6
Washington : Offic of Air, Land, and Water Use, Office of Research and Development, U.S. Environmental Protection Agency, 1976

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كتاب
7
بواسطة Hindawi, Ibrahim J., Raniere, Lawrence C., Rea, James A.
Corvallis, Or. : Springfield, Va. : U.S. Environmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory, Terrestrial Ecology Branch ; For sale by the National Technical Information Service, 1976

وثيقة رسمية كتاب
8
بواسطة Winberry, William T.
Research Triangle Park, NC : Atmospheric Research and Exposure Assessment Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1989

وثيقة رسمية مادة مرجعية
9
Corvallis, Or. : Springfield, Va. : Evironmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory ; For sale by the National Technical Information Service, 1977

وثيقة رسمية كتاب
10
Washington, DC : Corvallis, OR : Las Vegas, NV : U.S. Environmental Protection Agency, Office of Research and Development ; Environmental Research Laboratory ; Environmental Monitoring Systems Laboratory, 1990

وثيقة رسمية كتاب
11
Washington, D.C. : Office of Research and Development, U.S. Environmental Protection Agency : For sale by the Supt. of Docs., U.S. G.P.O., 1981

وثيقة رسمية كتاب
12
Washington, DC : U.S. Environmental Protection Agency, Office of Research and Development, 1995

كتاب
13
Cincinnati, Ohio : Center for Environmental Research Information, National Risk Managment Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2000

كتاب
14
Washington, DC : Office of Research and Development, U.S. Environmental Protection Agency, 1993

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وثيقة رسمية كتاب
15
Washington, DC : U.S. G.P.O., 1989

وثيقة رسمية كتاب
16
Cincinnati, Ohio : Washington, D.C. : U.S. Environmental Protection Agency, Office of Research and Development ; Office of Emergency and Remedial Response, 1989

وثيقة رسمية كتاب
17
Cincinnati, OH : Office of Research and Development, U.S. Environmental Protection Agency, 1994

وثيقة رسمية كتاب
18
بواسطة Davidson, L. N., Lyman, Warren J., Shooter, D., Valentine, J. R.
Washington : Springfield, Va. : Environmental Protection Agengy, Office of Research and Development ; For sale by the National Technical Information Service, 1977

وثيقة رسمية كتاب
19
Washington : Springfield, Va. : Environmental Protection Agency, Office of Research and Development ; For sale by the National Technical Information Service, 1976

وثيقة رسمية كتاب
20
Washington, DC : U.S. Environmental Protection Agency, Office of Research and Development, 1986

وثيقة رسمية كتاب