Levinson, Arik Efficient environmental regulation: case studies of urban air pollution; Los Angeles, Mexico City, Cubatao, and Ankara by Arik Levinson and Sudhir Shetty - Washington, D.C. IBRD 1992 - 56p. - IBRD. Working Papers: WPS 942 . Subjects--Topical Terms: Air Pollution Dewey Class. No.: X91 L578