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Filters: Keyword is tree ring dates and Author is Robinson, William J. [Clear All Filters]
Tree-Ring Dates From Utah S-W Southern Utah Area. Tucson: University of Arizona.. 1969.
Tree-Ring Dates From Arizona C-D Eastern Grand Canyon-Tsegi Canyon-Kayenta Area. Tree-Ring Dates. Tree-Ring Dates. Tucson: University of Arizona.. 1968.