Ultrastructural studies on graptolites [by] Adam Urbanek and Kenneth M. Towe.
By: Urbanek, Adam.
Contributor(s): Towe, Kenneth M.
Material type:
Vol. 2: Supt. of Docs. no. SI 1.30:22
Includes bibliographies.
1. The periderm and its derivatives in the Dendroidea and in Mastigograptus.--2. The periderm and its derivatives in the Graptoloidea.
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