. "screw harrow" . . "implements" . . "Harrow" . "harrowed" . . . "harrowing" . . "drag harrow" . . . . "harrows" . "disc harrows" . "Harrow (tool)" . "chain harrow" . . "spike-tooth harrow" . "Harrower" . . "harrow" . "Harrow (tool)" . . "Rotary harrow" . . .