Description
Item Description:Shipping list number: 87-151-P.
1 folded map in pocket.
Shipping list number: 87-0151-P.
Physical Description:vi, 98 pages : illustrations, maps ; 26 cm.
Also available via Internet from the USGS web site as a .DJVU file. Address as of 9/12/08: http://pubs.er.usgs.gov/usgspubs/cir/cir991 ; current access available via PURL.
Bibliography:Includes bibliographical references (page 98).