TY - RPRT TI - Relation of concentration and exposure time to the efficacy of niclosamide against larval sea lampreys ( Petromyzon marinus ) AU - R.J. Scholefield AU - R.A. Bergstedt AU - T.D. Bills PY - 2003 DO - 10.1016/s0380-1330(03)70510-3 UR - https://pubs.usgs.gov/publication/70025380 ID - 70025380 ER -