1 folded sheet (6 pages) : color illustrations, color maps ; 28 cm
OCLC
ocm49847442
Caption title.
Shipping list no.: 2002-0197-P.
"May 2002"--P. [1].
Includes bibliographical references (page 6).
Also available via Internet from the USGS web site. Address as of 4/3/04: http://pa.water.usgs.gov/reports/fs019-02.pdf; current access is available via PURL.