Studies upon the plant parasitic nematodes and their control /

Part 1 reprinted from Phytopathology, vol. 4, no. 4 (Aug. 1914), p. [323]-326, plate XXI ; Part 2 reprinted from Phytopathology, vol. IX, no. 2 (Feb. 1919), p. [93]-103, plate IX ; Part 3: Bulletin / United States Department of Agriculture, no. 818 (5 Jan. 1920) (see OCLC #16627505), 14 p., V p. of plates ; Part 4: Bulletin / United States Department of Agriculture, no. 842 (7 Sept. 1920) (see OCLC #16627722), 40 p., VI p. of plates.Title from added collective thesis title page.Thesis (Ph. D.)--University of Wisconsin--Madison, 1919.Includes bibliographical references.Mode of access: Internet