vi, 34 pages : color illustrations, color maps ; 28 cm
ISBNs
9780607964059, 0607964057
OCLC
ocm54205947
"National Water-Quality Assessment (NAWQA) Program Mobile River Basin"--P. [4] of cover.
Includes bibliographical references (pages 25-26).
Also available via Internet from the USGS web site. Address as of 8/9/04: http://water.usgs.gov/pubs/circ/2004/1231/pdf/circular1231.pdf; current access is available via PURL.