[Reston, VA] : U.S. Dept. of the Interior, U.S. Geological Survey, 2001
Physical Details
15 pages ; 24 cm
OCLC
ocm49800707
"2001"--P. 15.
Cover title.
Shipping list no.: 2002-0181-P.
Also available via Internet from the USGS web site. Address as of 6/11/02: http://mac.usgs.gov/mac/isb/pubs/booklets/elvadist/elvadist.html; current access is available via PURL.