How to measure tree crown widths.

Bibliographic Details
Corporate Author:	North Central Forest Experiment Station (Saint Paul, Minn.)
Format:	Government Document Book
Language:	English
Published:	[St. Paul] : Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1977.
Subjects:	Trees > Measurement. Forests and forestry > Measurement.

Evans: US Documents (Annex 5th floor)