كتب ذات صلة

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

Wheat.

Stress indices for spring wheat on the Canadian prairies

Seed wheat: an investigation and discussion of the relative value as seed of large plump and small shrivelled grains.

• Report on a soil survey of zone no. 1 (Gharbíya), 1921
  المؤلفون: Hughes, Frank.
• Note on the alkaloids of some Egyptian Solanaceæ
  المؤلفون: Hughes, Frank.
• The fixation of atmospheric nitrogen a communication made to the Cairo Scientific Society, January 3, 1919
  المؤلفون: Hughes, Frank.

• Nile control : a statement of the necessity for further control of the Nile to complete the development of Egypt and develop a certain area in the Sudan, with particulars of the physical conditions to be considered and a programme of the engineering works involved
  المؤلفون: Macdonald, Murdoch
• Nile control works : note on a series of c ontrol works to regulate the irrigation water supply of the nile valley
  المؤلفون: Macdonald, Murdoch
• Nile control : a statement of the necessity for further control of the Nile to complete the development of Egypt and develop a certain area in the Sudan, with particulars of the physical conditions to be considered and a programme of the engineering works involved
  المؤلفون: Macdonald, Murdoch