كتب ذات صلة

Studies on ammonification in soils by pure cultures

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

The effects of calcium and magnesium carbonates on some biological transformations of nitrogen in soils

The effect of reaction on the fixation of nitrogen by Azotobacter

• Some tests of flour made from Egyptian wheats
  المؤلفون: Hughes, Frank.
• 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.

• 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