General Index of the Agricultural Reports of the Patent Office, for Twenty-Five Years, from 1837 to 1861; and of the Department of Agriculture, for Fifteen Years, from 1862 To 1876 by United States Dept of Agriculture, United States Patent Office Annual Rep, United States Dept of Agriculture Rep

General Index of the Agricultural Reports of the Patent Office, for Twenty-Five Years, from 1837 to 1861; and of the Department of Agriculture, for Fifteen Years, from 1862 To 1876