Author: Tokunaga, S., 1958.:
Title: Palynological study on Japanese coal. I. Method of pollenanalysis on Japanese coal. // II. Pollenstratigraphical investigations in the coal fields, Middle Hokkaido. [Rep. Geol. Surv. Japan, 177 & 181.]
Description: Hisamoto. Two papers, large 8vo. Vol. 1: pp. iv,56,[4], many microphotos on 1 plates (1 in colour), text illustr.; vol. 2: pp. iv,50,[4], many microphotos on 8 plates (1 col.), text illustr., refs. Orig. wrappers. - In Japanese with short English abstract.

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