Note 166 — Chapter II · PLUM CULTURE.
Reading edition
Smith, E. F. and Townsend, C. O. A Plant Tumor of Bacterial Origin Science 25:671-673. 1907. Toumey, J. W. Cause and Nature of Crown Gall Ariz. Sta. Bul. 33:1-64, figs. 1-31. 1900. Hedgcock, G. C. Crown Gall, etc. U. S. Dept. Agr. Bur. Pl. Ind. Bul. 90:15-17, Pls. 3-5. 1906.