http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hydrology and water quality of the principal springs in Puerto Rico
University of Puerto Rico (Mayagüez Campus)
1 online resource (v, 30 pages) : illustrations, maps.
"Prepared in cooperation with the Puerto Rico Department of Natural Resources and the Water Resources Research Institute of the University of Puerto Rico (Mayaguez Campus)."
Includes bibliographical references (pages 30).
Water-resources investigations report ; 85-4269