Investigation of the presence and change over time of water quality parameters in selected natural swimming areas in Oregon
By: by Erica Van Ess.
Published: 1997
Language: eng
Number of pages: 62
Subjects: Recreation areas -- Health aspects -- Oregon.; Rivers -- Oregon -- Recreational use.; Water quality biological assessment -- Oregon.; Bacterial pollution of water -- Oregon.
Notes: Typescript (photocopy)

Thesis (M.S.)--Oregon State University, 1997.

Includes bibliographical references (leaves 59-62).