@book {,
title = {Arrowheads and projectile points: With a classification guide for lithic artifacts},
year = {1974},
note = {by G. E. Van Buren.ill. ; 29 cm.Includes indexes.S. Hughes 1998 cites this for notched projectile tips in to slotted hafts = greater impact loads.},
publisher = {Arrowhead Publishing},
organization = {Arrowhead Publishing},
address = {Garden Grove, Calif.},
keywords = {Indian weapons., Projectile points.},
author = {Van Buren, G. E.}
}