. . . . . . "Laboratory tests of an electrical barrier for controlling predation by northern squawfish" . "Laboratory tests of an electrical barrier for controlling predation by northern squawfish"@en . . . . . . . . . . . . . . . . . "Laboratory Tests of an Electrical Barrier for ControllingPredation by Northern Squawfish" . . . . . "Fishes Diseases." . . . . "United States. Bureau of Commercial Fisheries," . . "Predatory animals Control." . .