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The evolution of projectile points and technical systems: A case from Northern Patagonian coast (Argentina)

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The evolution of projectile points and technical systems: A case from Northern Patagonian coast (Argentina)

Cardillo, Marcelo et al · Elsevier · 2014 · ISSN 2352-409X

In this paper we present the results of the phylogenetic analysis of projectile points dating from the Middle-Late and final Late Holocene recovered from different sites along the coast of San Matías Gulf (Río Negro pr...

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Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

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Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

Xiang Wan; Wenqian Wang; Jiming Liu; Tiejun Tong · BMC Medical Research Methodology · 2014

BACKGROUND: In systematic reviews and meta-analysis, researchers often pool the results of the sample mean and standard deviation from a set of similar clinical trials. A number of the trials, however, reported the study...

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