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Office of Transportation and Air Quality
[Washington, D.C.] : U.S. Environmental Protection Agency, Office of Transportation and Air Quality, [2005]Online purl.fdlp.gov
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EPA issues notice of proposed rulemaking to establish a voluntary quality assurance program for verifying the validity of renewable identification numbers under the RFS program
[Washington, D.C.] : United States Environmental Protection Agency, Office of Transportation and Air Quality, 2013.Online purl.fdlp.gov
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EPA proposed NOx emission standards for aircraft gas turbine engines
[Washington, D.C.] : [U.S. Environmental Protection Agency, Office of Transportation and Air Quality], [2011]Online purl.fdlp.gov
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