Search Results for the EPA National Library Catalog

Items Found: 4

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Your Search: (AUTHOR=Ketcham AND Helen.)

 
 
 

Select Item Title Year Published
EPA chemical activities status report / 1979
EPA chemical activities status report compiled under the direction of Eleanor T. Merrick, with the assistance of Helen Ketcham, Lawrence J. Murphy, Jr., Kathryn Slike 1979
Perspectives on state-EPA grant activities / 1980
State administrative models for toxic substances management / 1980

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