The structure and development of crown gall: a plant cancer.
By Erwin F. Smith and Nellie A. Brown and Lucia McCulloch.
- Washington, Govt. Print. Off., 1912.
- 61 p. cix pl. on 56 l., 2 diagr. 23 cm.
- U. S. Dept. of Agriculture. Bureau of Plant Industry. Bulletin no. 255 .