TY - RPRT TI - Water quality and mass transport in four watersheds in eastern Puerto Rico: Chapter E in Water quality and landscape processes of four watersheds in eastern Puerto Rico AU - Robert F. Stallard AU - Sheila F. Murphy PY - 2012 DO - 10.3133/pp1789e UR - https://pubs.usgs.gov/publication/pp1789E ID - pp1789E ER -