The Oyster Shell Scale. Bulletin No.III of the Maryland Agricultural Experiment Station. October, 1906.
College Park, MD: Agricultural Experiment Station, 1906. Paperback. VG+ in original orange wrappers. Stamped w/pervious owner's seal. Insides very brown but clean, no chipping. Diagrams, photos of trees around Maryland. 13 pp. Marylandia wraps. MD/2203. Very Good +.