Title from PDF title screen (viewed on Oct. 24, 2006).
At head of title on HTML title screen: USGS Alaska Water Science Center Publication.
Includes bibliographical references (pages 29-32).
Mode of access: Internet from the USGS web site. Address as of 11/6/06: http://pubs.usgs.gov/sir/2006/5229/pdf/SIR2006-5229.pdf; current access via PURL.