Author:

Eggert,D.A.;Delevoryas,T.

Year:

1967

Title:

Studies of Paleozoic ferns

Reference:

Eggert,D.A. et al. (1967) Studies of Paleozoic ferns Pal¤eontographica Abteilung B Vol. 120 # 5 P. 169- 180

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