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1 Do Vehicle Emissions Testing Program Improve Air Quality?

Author(s):
Kahn, Matthew E.
Date:
1994
Subject:
Economics, Environmental studies
Content Type:
Working papers
Publisher:
Department of Economics, Columbia University
Permanent URL:
http://hdl.handle.net/10022/AC:P:15579

2 Evidence on Unobserved Polluter Abatement Effort

Author(s):
Kahn, Matthew E.
Date:
1994
Subject:
Economics, Environmental studies
Content Type:
Working papers
Publisher:
Department of Economics, Columbia University
Permanent URL:
http://hdl.handle.net/10022/AC:P:15604

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