Forest Service Handbooks (FSH)
Directive Issuances
To assist users, the codes and captions for the Forest Service Handbooks (FSH's) are displayed by series.
To view direction, click on the applicable Handbook.
An index of documents for that Handbook will be displayed.
Please be aware that some chapters, because of their length, may be organized into several documents.
Additionally, interim directives (IDs) and some tables of contents and exhibits are separate documents.
Series 4000 - Research
Zero Code
4100 - Timber Management Research
4200 - Wildlife, Range, and Fish Habitat Research
4300 - Watershed Management and Rehabilitation Research
4400 - Forest Fire and Atmospheric Sciences Research
4500 - Forest Insect and Disease Research
4700 - Forest Products and Harvesting Research
4800 - Forest Resources Economics Research
4900 - Forest Recreation and Urban Forestry Research
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Last modified, Mar 17, 1999
https://www.fs.usda.gov/im/directives/dughtml/fsh_4000.html