Author: Jongmans, W.J., 1939.:
Title: Die Kohlenbecken des Karbons und Perms im USSR und Ost-Asien. [Printed in:]
Description: Jaarversl. Geol. Bur. Mijngeb. Herlen, Jg. 1934-1937: pp. 15-192, many photos of plate fossils on 40 plates, 2 fold. diagrs., refs. Small 4to. Orig. wrappers. - Concise description of many local floras with lists of species.

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