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Filtering by: Creator Heppell, Scott A. Decade 1930-1939

A study of the psychological laws used in the analytical method of teaching Gregg shor...

Fire : its ultimate importance in the management of Douglas fir forests of the Pacific...

The energy hysteresis of a collagenous material

A study of the laws of learning

A survey of guidance in the secondary schools of Oregon : a suggested course

A test-survey of delinquency in a high school of medium size

A proposed slash disposal plan for western Oregon

A contribution to the knowledge of the Odonata of Oregon

A summary of our knowledge of Oregon's igneous geology

A contribution toward a bibliography of Oregon botany with notes on the botanical expl...

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