Excerpt from Direct Costs of Silvicultural Treatments on National Forests, 1975-78 Four types of silvicultural treatments, or practices, were studied: site preparation, reforestation, intermediate treat ment, and slash disposal. The unit of observation was a single contiguous treatment area, or tract, that may be all or part of the entire service contract. A total of observations were received and analyzed from report forms sent to National Forests. Of that total, 307 were discarded because of missing values for critical variables. All results were reported in 1978 dollars. Cost predictions were developed for nine of the more frequently encountered silvicultural treatment and forest type group combinations. They express cost per treatment area as a function of treatment and site characteristics. These equations include only those variables that are commonly known or that can be easily estimated before a treatment is carried out. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.