A 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
1879
A 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
United States. Dept. of Agriculture
1879
225 p. 24 cm