http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Ground-water levels in the United States, 1965-69
1 online resource (v, 158 pages) : illustrations, maps.
"Prepared by the U.S. Geological Survey in cooperation with the States of Arkansas, Louisiana, Oklahoma, and Texas, and with other agencies"--Page iii.
"*U. S. Government Printing Office : 1971 O - 429-279"--Page 158.
Geological Survey water-supply paper ; no. 1979