Articles discussing Portland sewage disposal issue and Ed F. Averill lecture
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- 1940-09 - 1940-10
Oregonian (Firm)
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Articles discussing Portland sewage disposal issue and Ed F. Averill lecture
Oregonian (Firm)
Articles discussing river pollution and lecture given by Dr. William Beebe
Oregonian (Firm)
Articles discussing pilchard conservation and sewage systems
Oregonian (Firm)
Article describing the effects of Willamette River pollution on released fish
Oregonian (Firm)
Articles discussing Rogue River pollution and dams on the Willamette River
Oregonian (Firm)
Letters to the editor discussing Willamette River pollution
Oregonian (Firm)
Articles discussing pollution of Willamette River
Oregonian (Firm)