TY - RPRT TI - Report of the River Master of the Delaware River for the period December 1, 1979-November 30, 1980 AU - Francis T. Schaefer AU - Robert E. Fish PY - 1981 DO - 10.3133/ofr81810 UR - https://pubs.usgs.gov/publication/ofr81810 ID - ofr81810 ER -