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.; Publications of the Carnegie Museum, serial -- no. 64, 104.
Publisher: Published by the authority of the Board of Trustees of the Carnegie Institute
Published: 1911
Place of publication: Pittsburgh
Language: eng
Other titles: Monograph of the Naiades of Pennsylvania
Notes: Includes bibliographical references and indexes.

link Internet Archive 20100503 mcb
Table of contents: title: v. 1. General introduction. pt. 1. Anatomical investigations. pt. 2. The system of North American najades; title: v. 2. pt. 3. Systematic account of the genera and species.