A monograph of the Najades of Pennsylvania
By: by Arnold E. Ortmann.
Contributors: Carnegie Museum.
Series: Memoirs of the Carnegie Museum -- vol. 4, no. 6; v. 8, no. 1.; Memoirs of the Carnegie Museum -- vol. 4, no. 6, v. 8, no. 1.
Publisher: Published by the authority of the Board of Trustees of the Carnegie Institute
Published: 1911
Place of publication: Pittsburgh
Language: eng
Subjects: Unionidae.; Mussels -- Pennsylvania.
Notes: Title of pt. 3: A monograph of the naiades of Pennsylvania.

Includes bibliographical references and indexes.
Table of contents: value: v. 1 General instroduction. pt. 1. Anatomical investigations. pt. 2. The system of North American najades; value: v. 2. pt. 3. Systematic account of the genera and species.