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	1.	No cover image available Intracanyon flows of the Columbia river Basalt Group in the lower Columbia River Gorge and their relationship to the Troutdale formation by Tolan, Terry Beeson, Marvin Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 95(4), 1984, p. 463-477: : ill., carte, tab., rés.(Angl) Availability: No items available.
	2.	No cover image available Tectonic setting of the Portland-Vancouver area, Oregon and Washington : constraints from low-altitude aeromagnetic data by Blakely, Richard Wells, Ray Yelin, Thomas Madin, Ian Beeson, Marvin Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 107(9), 1995, p. 1051-1062: : ill., cartes, rés.(Angl) Availability: No items available.

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