How to identify white pine blister rust and remove cankers /

Bibliographic Details

Main Author:	Nicholls, Thomas H.
Corporate Authors:	North Central Forest Experiment Station (Saint Paul, Minn.), United States. Forest Service
Other Authors:	Anderson, Robert L. (Robert Lee), 1944-
Format:	Government Document Book
Language:	English
Published:	St. Paul, Minn. : Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1977.
Subjects:	Blister rust. Canker (Plant disease)