Revisions of Ulmus and Zelkova in the middle and late Tertiary of western North America.  by T. Tanai and J.A. Wolfe.
Contributors: Wolfe, J.A.
Publisher: U.S.  Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Paleobotany - Tertiary
Notes: 11