Robert G Donley

Keywords.Photographers.Robert G Donley, Keywords.Places.Los Angeles County.Whittier parkway, Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972

Keywords.Activities.Hand-pulling, Keywords.People.Howell, Keywords.People.Kreps, Keywords.Photographers.Robert G Donley, Keywords.Places.Los Angeles County.San Jose Creek (near the San Gabriel River), Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972

Keywords.Activities.Herbicides.Vapam, Keywords.People, Keywords.Photographers.Robert G Donley, Keywords.Places.Los Angeles County.Rio Hondo River, Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972

Keywords.Photographers.Robert G Donley, Keywords.Places.Los Angeles County.Whittier Narrows Golf Course, Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides), Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972

Keywords.Photographers.Robert G Donley, Keywords.Places.Los Angeles County, Keywords.Weeds.Alligatorweed (Alternanthera philoxeroides).Specimens - Roots, Stems, etc, Keywords.Weeds.Ratings.A Rated, Keywords.Year.1972