Download or read book Weights and Centers of Gravity for Red Pine, White Spruce, and Balsam Fir written by Helmuth M. Steinhilb and published by . This book was released on 1972 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the weights and centers of gravity for the green trees and boles of balsam fir, white spruce, and red pine for use in the design of harvesting equipment.