| http://www.w3.org/ns/prov#value | - Cephalic and prosopic indices will be determined by: -Cephalic index (CI) = Head width/ head height x 100 -Prosopic index (PI) = face length/face width x 100 Depending upon the ranges of these indices, head and face types are classified according to Williams et al., 1995 and Panero, 1979 (Table I).
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