Mode of access: Internet from the USGS web site (.DJVU file). Address as of 12/23/08: http://pubs.er.usgs.gov/usgspubs/cir/cir915; current access available via PURL.
Note
Title from .DJVU title screen (viewed on Dec. 23, 2008).
"Prepared in cooperation with the U.S. Minerals Management Service under Interagency Agreement AA851-IA2-18."
Bibliography
Includes bibliographical references (page 18).
Reproduction
Electronic reproduction. [Middleton, WI : U.S. Geological Survey, Publications Warehouse, between 2004 and 2005].