Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
PCA of Acheulean bifaces from 18 sites, based on 11 variables measured from individual bifaces (length, breadth, thickness, five other planform variables and three further thickness variables: see the electronic supplementary material). KAR, Kariandusi; COR, Cornelia; KF, Kalambo Falls; V, Vaal; STIC, STIC, Casablanca; KIL, Kilombe.
