http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Passive sampling of groundwater wells for determination of water chemistry
1 online resource (ix, 80 pages) : color illustrations, color maps.
by Thomas E. Imbrigiotta and Philip T. Harte.
"Chapter 8 of Section D. Water quality, Book 1, Collection of water data by direct measurement."