Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory [electronic resource] : processing, taxonomy, and quality control of benthic macroinvertebrate samples / by Stephen R. Moulton ... [et al.].
Imprint
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey : USGS Information Services [distributor], 2000.
Mode of access: Internet from the USGS Web site. Address as of 8/25/04: http://nwql.usgs.gov/Public/pubs/OFR00-212.pdf; current access is available via PURL.
Note
Title from PDF title screen (viewed on August 25, 2004).
