1979

Keywords.Activities.Herbicides.Sonar, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Places.Santa Clara County.New Almaden, Keywords.Weeds.Ratings.B Rated, Keywords.Weeds.Thistles.Distaff Thistle (Carthamus), Keywords.Year.1979

Keywords.Animals.Alligators, Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Places.Imperial County.Sheldon Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Hydrilla (Hydrilla verticillata).Thick Mat, Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Places.Imperial County.Sheldon Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata).After Treatment, Keywords.Weeds.Hydrilla (Hydrilla verticillata).Tubers and Specimens, Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Activities.Fish Census by Fish & Game, Keywords.Animals.Fish.Catfish, Keywords.Places.Imperial County.All-American Canal, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Activities.Fish Census by Fish & Game, Keywords.Animals.Fish.Shiner, Keywords.Places.Imperial County.All-American Canal, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Activities.Drawdown and Draining, Keywords.Places.San Diego County.Murray Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Activities.Drawdown and Draining, Keywords.Places.San Diego County.Murray Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata).Thick Mat, Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979