Livres associés

Vertical farming

The utility of sulphate of ammonia in agriculture.

A tribute to Levi Stockbridge, professor of agriculture in the Massachusetts agricultural college from 1871 to 1882, and president of the college from 1880 to 1882.

Tobacco soils of the United States: a preliminary report upon the soils of the principal tobacco districts.

• The story of the soil, from the basis of absolute science and real life
  Auteur(s): Hopkins, Cyril G.
• Soil bacteria and phosphates
  Auteur(s): Hopkins, Cyril G. ,  Whiting, Albert L.
• Laboratory manual for soil fertility
  Auteur(s): Pettit, James Harvey ,  Hopkins, Cyril G.

• Types and breeds of farm animals
  Auteur(s): Plumb, Charles Sumner
• Types and breeds of farm animals
  Auteur(s): Plumb, Charles S.
• Types and breeds of farm animals
  Auteur(s): Plumb, Charles Sumner