Description
Item Description:Includes 4 ancillary maps.
Physical Description:2 sections : color ; on sheets 82 x 130 cm and 102 x 127 cm, folded in envelope 30 x 24 cm + 1 pamphlet (31 pages ; 28 cm)
Also available via the Internet from the USGS Web site.
Bibliography:Pamphlet Includes bibliographical references (pages 8-13).