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, etc.
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.
Table of contents: title: v.1 General instroduction. pt. 1. Anatomical investigations. pt. 2. The system of North American najades; title: v. 2. pt. 3. Systematic account of the genera and species.