Softwood Tree Volume Equations for Major California Speci...
Maclean, Colin D. Excerpt from Softwood Tree Volume Equations for Major California SpeciesAlthough the size of our sample was more than adequate, the reader should be aware of some important data deficiencies. First, two - thirds of the sample was drawn from trees measured many years ago. While we recognized the danger of bias inherent in the use of old data, that risk seemed preferable to relying on a much smaller sample with a limited geographical distributio...