J. L. Bischoff No description specified. 1-4 (4 Records) Documents Comments On the Pleistocene Age Assignment and Associations of a Human Burial from the Yuha Desert (1978) Pre-Valdivia Occupations On the Southwest Coast of Ecuador (1972) Reply To Payen Et AL., II (1979) TL / ESR Study of the Hearth Feature at the Calico Archaeologcial Site, California (1984)