Author:

Hoffmeister,W.S.;Staplin,F.L.;Malloy,R.E.

Year:

1955

Title:

Geologic range of Paleozoic plant spores in North America

Reference:

Hoffmeister,W.S. et al. (1955) Geologic range of Paleozoic plant spores in North America Micropaleontology Vol. 1 # 1 P. 9- 27

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