كتب ذات صلة

Wheat culture. How to double the yield and increase the profits.

Wheat.

What you should know about seeds.

The vitality and germination of seeds.

• The sheep-fluke
  المؤلفون: Cobb, Nathan Augustus
• Nematodes, mostly Australian and Fijian.
  المؤلفون: Cobb, Nathan Augustus
• Methods of using the microscope, camera-lucida and solar projector for purposes of examination and the production of illustrations.
  المؤلفون: Cobb, Nathan Augustus

• William J. Farrer, and the results of his work.
  المؤلفون: Guthrie, Frederick Bickell.
• Report on parasitic and injurious insects.
  المؤلفون: Froggartt, Walter Wilson.
• The relation of fertilisers to soil fertility.
  المؤلفون: Guthrie, Frederick Bickell.