http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
an ultra-oligotrophic environment and some implications concerning recreational development
Douglas W. Larson and John R. Donaldson.
Cover title: Waldo Lake, Oregon: a special study.
WRRI (Oregon State University. Water Resources Research Institute) ; no. 2