http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
water supply of El Morro National Monument
1 online resource (v, 32 pages) : illustrations, map.
"Prepared in cooperation with the National Park Service."
"U.S. Government Printing Office : 1965 O 712-880"--Page 32.
Geological Survey water-supply paper ; 1766