Author: Winslow, M.R., 1959.:
Title: Upper Mississippian and Pennsylvanian megaspores and other plant microfossils from Illinois. [Bull. Illinois St. Geol. Surv., 86.]
Description: Urbana, Ill. 8vo. Pp. 101, 15 pls. of microphotos, 8 figs., 1 diagr., refs. Orig. wrs.

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