كتب ذات صلة

Untersuchungen über die Stickstoffnahrung der Gramineen und Leguminosen

Results of experiments at Rothamsted the growth of leguminous crops, for many years in succession on the same land; being (with additions) a lecture delivered November, 1, 1889, at the Royal Agricultural College, Cirencester

Nitrogen fixation by yeasts and other fungi by Charles B. Lipman ...

The leguminous plants of North Carolina.

• Soil bacteria and phosphates
  المؤلفون: Hopkins, Cyril G. ,  Whiting, Albert L.

• A study of soybean varieties with reference to their use as food
  المؤلفون: Woodruff, Sybil ,  Klaas, Helen
• A study of the factors influencing the improvement of the potato
  المؤلفون: East, Edward M.
• Some important insects of Illinois shade trees and shrubs
  المؤلفون: Forbes, Stephen Alfred