TY - RPRT TI - Results of qualification tests on water-level sensing instruments, 1984-1985 AU - D.H. Rapp AU - B.L. McDonald AU - R. M. Hughes PY - 1985 DO - 10.3133/ofr85489 UR - https://pubs.usgs.gov/publication/ofr85489 ID - ofr85489 ER -