Hanna, G. D.; Grant, W. M. (1929). Brackish-Water Pliocene diatoms from the Etchegoin formation of Central California. Journal of Paleontology. 3(1): 87-101.
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Hanna, G. D.; Grant, W. M.
1929
Brackish-Water Pliocene diatoms from the Etchegoin formation of Central California