Mode of access: Internet at the USGS web site Address as of 01/10/04: http://water.usgs.gov/pubs/wri/wri024277/ca0504.book.pdf; current access available via PURL.
Mode of access: Map plate also available via Internet at the USGS web site. Addresses as of 01/10/04: http://water.usgs.gov/pubs/wri/wri024277/plate.pdf, http://water.usgs.gov/pubs/wri/wri024277/plate%5Fpress.pdf; current access available via PURL.