كتب ذات صلة

Vertical farming

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

Synopsis of a course of lectures on the origin, composition, and functions of soils, and their bearing on agriculture. Delivered at the University of California, during the first term, 1874-5

Sulphur as a factor in soil fertility ...

• My handkerchief garden. Size, 25 x 60 feet.
  المؤلفون: Barnard, Charles
• My handkerchief garden. Size 25 x 60 feet. Results: a garden, fresh vegetables, exercise, health, and $20.49.
  المؤلفون: Barnard, Charles
• Graphic methods in teaching
  المؤلفون: Barnard, Charles ,  Woodhull, John Francis

• Walks and talks in the geological field
  المؤلفون: Winchell, Alexander
• Talks about the weather in its relation to plants and animals. A book of observations for farmers, students, and schools.
  المؤلفون: Barnard, Charles
• The physiology and hygiene of the house in which we live.
  المؤلفون: Hatfield, Marcus Patten