The Pleistocene Epoch in Deep-Sea Sediments: A complete time scale dates the beginning of the first ice age at about 1frac12 million years ago
Ericson, D. B., Ewing, M., Wollin, G.Volume:
146
Language:
english
Journal:
Science
DOI:
10.1126/science.146.3645.723
Date:
November, 1964
File:
PDF, 1.01 MB
english, 1964