Instructions for making timber surveys in the national forests :
including standard classification of forest types.

APA Citation

United States. Forest Service. (1925). Instructions for making timber surveys in the national forests: including standard classification of forest types. Washington [D.C.]: G.P.O..

MLA Citation

United States. Forest Service. Instructions for Making Timber Surveys In the National Forests: Including Standard Classification of Forest Types. Washington [D.C.]: G.P.O., 1925.