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This list presents results obtained during 1971-1972 and is a continuation of research evaluating natural C14levels for which data have been published previously (Baxteret al., 1969; Baxter and Walton, 1970; Farmeret al., 1972). The results of these studies are presented as δC14and Δ values based on age-corrected activities, although this correction is very small. Errors quoted are lσcounting uncertainties only. Pretreatment procedures are outlined in the text and analytical methods aredoi:10.1017/s003382220000895x fatcat:4sqcltuc7rachlfriltbp2qo24