Does environmental policy work?David E. Ervin, James R. Kahn, Marie Leigh Livingston · First published 2003Open the Tome
Analysis of pollution control strategies for the Tualatin RiverDavid E. Ervin · First published 1995Open the Tome
Conservation and environmental issues in agricultureDavid E. Ervin · First published 1991Open the Tome
An economic analysis of income determination for prodution workers in Oregon's wood products industryDavid E. Ervin · First published 1974Open the Tome
