By Barlow, Paul M..
Reston, Va. | Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey | For sale by USGS, Information Services 2003 .
vii, 113 p. , Shipping list no.: 2004-0063-P. 28 cm..
060795194X (pbk.)

Reston, Va. : |b U.S. Dept. of the Interior, U.S. Geological Survey ; |a Denver, CO : |b For sale by USGS Information Services, |c 2005. .
vii, 110 p. : |b ill. (some col.), col. maps ; |c 28 cm. , Shipping list no. 2005-0140-P.