Field studies of the crown-gall and hairy-root of the apple-tree
By: by George G. Hedgcock ...
Series: Bulletin / U.S. Dept. of Agriculture. Bureau of Plant Industry -- no. 186; Bulletin (United States. Bureau of Plant Industry) -- no. 186.
Publisher: G.P.O.
Published: 1910
Place of publication: Washington
Language: eng
Number of pages: 108
Subjects: Apples; Diseases and pests; Crown-gall disease; Hairy-root disease
Notes: Includes bibliographical references and index.