[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; [Denver, CO :] : [Books and Open-File Reports Section]; Washington, DC : For sale by the U.S. G.P.O., Supt. of Docs., [1991]
Physical Details
19 pages : illustrations, map ; 23 x 11 cm
ISBNs
9780160360268, 0160360269
OCLC
ocm27423604
Distributed to depository libraries in microfiche.