http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Unsaturated-saturated flow through heterogeneous sloping lands
by Fahd Salich Natur, Larry G. King, and Roland W. Jeppson.
PWRG (Utah Water Research Laboratory) ; no. 59c-9