Author: Habib, D., 1966.:
Title: Distribution of spore and pollen assemblages in the Lower Kittanning Coal of Western Pennsylvania.
Description: Palaeontology, 9(4): pp. 629-666, many microphotos on 6 plates, 6 digrs., 1 map, 1 fold. tab., refs. Plain new wrappers. - Lower Westphalian.

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