http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Socio-economic and institutional factors in irrigation return flow quality control
Robert S. Kerr Environmental Research Laboratory
v. 1. Methodology.--v. 2. Yakima Valey case study.--v. 3. Middle Rio Grande Valley case study.--v. 4. Grand Valley case study.
Research reporting series. EPA-600/2-78-174 a-d