Keys to the freshwater macroinvertebrates of Massachusetts
By: Douglas G. Smith ; in cooperation with the Commonwealth of Massachusetts, Technical Services Branch, Division of Water Pollution Control.
Contributors: Massachusetts. Division of Water Pollution Control. Technical Services Branch.
Publisher: Massachusetts Dept. of Environmental Quality Engineering, Division of Water Pollution Control
Published: uuuu
Place of publication: Westborough, MA
Language: eng
Subjects: Freshwater invertebrates -- Massachusetts -- Identification.
Notes: Includes bibliographical references.
Table of contents: title: no. 4. Benthic colonial phyla, including the Cnidaria, Entoprocta, and Ectoprocta (colonial hydrozoans, moss animals).