كتب ذات صلة

The principles of soil management

Forest physiography physiography of the United States and principles of soils in relation to forestry.

Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions.

Soils and fertilizers.

• Soil conditions and plant growth
  المؤلفون: Russell, Edward J.
• The book of the Rothamsted experiments. 2d ed., rev. by E.J. Russell. Issued with the authority of the Lawes Agricultural Trust Committee.
  المؤلفون: Russell, Edward J. ,  Hall, Daniel
• The micro-organisms of the soil.
  المؤلفون: Russell, Edward J.

• Water reptiles of the past and present
  المؤلفون: Williston, Samuel Wendell
• Water plants a study of aquatic angiosperms.
  المؤلفون: Arber, Agnes (Robertson) 1879-1960
• The wanderings of animals
  المؤلفون: Gadow, Hans