Arizona

Keywords.Places.Arizona.Gila Bend, Keywords.Weeds.Camelthorn (Alhagi camelorum), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972

Keywords.Animals.Insects.Leaf-footed Plant Bug, Keywords.Photographers.J L Johnson, Keywords.Places.Arizona.Madera Canyon, Keywords.Year.1974

Keywords.Activities.Survey, Keywords.People, Keywords.Photographers.J L Johnson, Keywords.Places.Arizona.Yuma.Imperial Reservoir, Keywords.Weeds.Coontail (Ceratophyllum demersum), Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979

Keywords.Photographers.J L Johnson, Keywords.Places.Arizona.Yuma.Imperial Reservoir, Keywords.Weeds.Hydrilla (Hydrilla verticillata), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1979