Note 40 — 6 WHAT THE BONES HAVE TO SAY
Reading edition
Helmut de Terra, “Comments on Radiocarbon Dates from Mexico,” in Radiocarbon Dating (Memoirs, Society for American Archaeology, vol. 17, no. 1, pt. 2, 1951), 33-34. H. M. Wormington, Ancient Man in North America (4th rev. ed., 1957), 238-241.