On Drepanophycus, Protolepidodendron and Protopteridium, with notes on the Palaeozoic flora of Yunnan
By: by T.G. Halle. Plates V and 2 figures of text
Series: China. Geological Survey. Palæontologia sinica. ser. A -- vol. 1, fasc. 4; Zhongguo gu sheng wu zhi -- ser. A v. 1, fasc. 4.
Publisher: Published by the Geological survey of China
Published: 1936
Place of publication: Nanking
Language: eng
Number of pages: 38
Subjects: Paleobotany
Notes: Last 4 pages in Chinese.

Bibliography: p. 27-28.