O. C. Compton

1903

• Comparison of fluorine levels in crops before and after aluminum factory operations in the Dalles area
• Fluorine levels in 1960 crops of The Dalles area
• Fluorine levels in 1961 crops of The Dalles area
• Fluorine levels in crops of The Dalles area in 1962 and 1963
• Fluorine levels in crops of The Dalles area in 1964