Online Resource
[Washington, D.C.] :U.S. G.P.O. ;
UID:
edoccha_9961081704202883
Format:
1 online resource (xiii, 379 pages).
Series Statement:
U.S. Geological Survey bulletin ; 1693
Note:
Title from PDF title screen (viewed June 28, 2004).
,
Mode of access: Internet from the USGS Web site. Address as of 6/28/04: http://pubs.usgs.gov/bul/b1693/Acover.pdf; current access is available via PURL.
Language:
English
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