TY - RPRT TI - Combining split-beam and dual-frequency identification sonars to estimate abundance of anadromous fishes in the Roanoke River, North Carolina AU - Jacob B. Hughes AU - Joseph E. Hightower PY - 2015 DO - 10.1080/02755947.2014.992558 UR - https://pubs.usgs.gov/publication/70173670 ID - 70173670 ER -