http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania
characterization of surface-runoff and ground-water quantity and quality in a small carbonate basin near Churchtown, Pennsylvania, prior to terracing and implementation of nutrient management
Evaluation of agricultural best management practices in the Conestoga River headwaters, Pennsylvania
ix, 103 pages : illustrations, maps ; 28 cm.
Includes bibliographical references (pages 101-103).
Water-resources investigations report ; 93-4119
Water-quality study of the Conestoga River Headwaters, Pennsylvania