Calaveras County

Keywords.Other.Quarantine Signs, Keywords.Places.Calaveras County, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1988

Keywords.Places.Calaveras County.Kersten's Ponds.Kersten 1, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1988

Keywords.Photographers.R A O'Connell, Keywords.Places.Calaveras County.Ghirardelli, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1988

Keywords.Activities.Herbicide Application Methods.Injection, Keywords.Activities.Herbicide Application Methods.Spraying, Keywords.Activities.Herbicides.Vapam, Keywords.Places.Calaveras County.Ghirardelli, Keywords.Places.Sonoma County.Spring Lake, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1986

Keywords.Activities.Herbicide Application Methods.Spraying, Keywords.Activities.Herbicides.Vapam, Keywords.Places.Calaveras County.Ghirardelli, Keywords.Places.Sonoma County.Spring Lake, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Activities.Filling Lake, Keywords.Places.Calaveras County.Ghirardelli, Keywords.Places.Sonoma County.Spring Lake, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1985

Keywords.Places.Calaveras County.Ghirardelli, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Hydrilla (Hydrilla verticillata).Tubers and Specimens.Mangin and spicules, Keywords.Weeds.Ratings.A Rated, Keywords.Year.1988

Keywords.Animals.Fish.Triploid Grass Carp, Keywords.Places.Calaveras County.Ghirardelli, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1988

Keywords.Places.Calaveras County.Ghirardelli, Keywords.Places.Imperial County.All-American Canal, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1989