1985

Keywords.Activities.Hydrilla Survey, Keywords.Photographers.R A O'Connell, Keywords.Places.San Joaquin County.Delta, Keywords.Weeds.Elodea (Elodea canadensis), Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Equipment, Keywords.Photographers.R A O'Connell, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Activities.California Weed Tours, Keywords.People, Keywords.Year.1985

Keywords.Activities.California Weed Tours, Keywords.Other Plants of Interest.Wildflowers, Keywords.Year.1985

Keywords.Places.Lassen County.Madeline Plains, Keywords.Weeds.Thistles.Peregrine Thistle (Cirsium cymosum), Keywords.Year.1985

Keywords.Activities.Diving, Keywords.Places.Yuba County.Lake Ellis, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Activities.Boating.Survey, Keywords.People.Bob Kramer, Keywords.People.Ross O'Connell, Keywords.Places.Monarch, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Activities.Boating.Survey, Keywords.Places.Nevada Co.Rollins Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Activities.Boating.Survey, Keywords.Activities.Boating.Unloading Boats, Keywords.Places.Sacramento County.Sacramento River, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985