TY - RPRT TI - 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: Water-quality study of the Conestoga River headwaters, Pennsylvania AU - Patricia L. Lietman AU - D. W. Hall AU - M. J. Langland AU - D. C. Chichester AU - J. R. Ward PY - 1996 DO - 10.3133/wri934119 UR - https://pubs.usgs.gov/publication/wri934119 ID - wri934119 ER -