Critical Periods in the History of the Earth
. By Joseph Le Conte. Bulletin Dept. Geology, University of California. Vol. I., No. 11, pp. 313-336. Berkeley, August, 1895. (Reprinted.)
1877 ◽
Vol s3-14
(80)
◽
pp. 99-114
◽
1978 ◽
Vol 8
(4)
◽
pp. 481-481
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