Marta Mirazón Lahr, The Evolution of Modern Human Diversity: A Study of Cranial Variation(Cambridge, UK: Cambridge University Press, 1996), 263.
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Marta Mirazón Lahr and Richard V. S. Wright, “The Question of Robusticity and the Relationship Between Cranial Size and Shape in Homo sapiens,” Journal of Human Evolution 31, no. 2 (Aug. 1996): 157–91.
