Scientific American. 162:
14.


Irving, W. N. (1971) Recent early man research in the north.
Arctic Anthropology.8(2):
68-82.


Irwin-Williams, C. (1978) Summary of archaeological evidence from the 
Valsequillo region, Puebia, Mexico.
In
Bowman, D. L., ed.
Cultural Continu­ity in Mesoamerica.
London, Mouton, pp. 7-22.


Irwin-Williams, C. (1981) Comments on geologic evidence forage of deposits at 
Hueyatlaco archaeological site, Valsequillo, Mexico.
Quaternary Research, 16:
258.


Isaac, G.L.(1978) The archaeological evidence for the activities of early 
African hominids.
In
Jolly, C. J., ed.
Early Hominids of Africa.
London, Duckworth, pp. 219—254.


Issel, A. (1868) Resume des recherches concernant 1'anciennete de 1'homme en 
Ligurie.
Congres International d'Anthropologie et d'ArcheologiePrehistoriques, Paris 
1867, Compte Rendu,
pp. 75-89. (*)


Issel, A. (1889) Cenni sulla giacitura dello scheletro umano recentmente 
scoperto nel pliocene di Castenedolo.
Bullettino di Paletnologia Italiana, 15:
89-109. (*)


Jacob, К., Jacob, C., and Shrivastava, R. N. (1953) Spores and tracheids of 
vascular plants from the Vindhyan System, India: the advent of vascular plants.
Nature, 172:
166—167.


Jacob, T. (1964) A new hominid skull cap from Pleistocene Sangiran.
Anthropologica, New Series, 6:
97-104.


Jacob, T. (1966) The sixth skull cap
of Pithecanthropus erectus. American Journalof Physical Anthropology, 25:
243—260.


Jacob, T. (1972) The absolute age of the Djetis beds at Modjokerto.
Antiquity46:
148.


Jacob, T. (1973) Palaeoanthropological discoveries in Indonesia with special 
reference to finds of the last two decades.
Journal of Human Evolution, 2:
473—485.


Jacob, Т., and Curtis, G. H. (1971) Preliminary potassium-argon dating of early 
man in Java.
Contribution of the University of California Archaeological Research Facility. 
12:
50.


Jessup.M. К. (1973)
The Caseforthe UFO.