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.
Archaeosurface A. Limestone biface. B. Archaeosurface A1. Biface in limestone and biface in siliceous limestone. Dotted line: final removals or retouch. The numbers indicate shaping phases and sub-phases (drawings G. Marchesi, modified).
