Includes bibliographical references (pages 73-74).
Also available via Internet from the NAWQA Web site. Address as of 2-10-03: http://water.usgs.gov/nawqa/protocols/OFR02-150/OFR02-150.pdf; current access is available via PURL.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2003 1 microfiche : negative.