REFERENCES: 
Baruah, T.C. and H.P. Barthakur (1997): A 
Textbook of soil analysis. Vikas Publishing House PVT LTD, New Delhi, India. 
Gameh, M.A., Ghallab, A., Abdelazez, S. H. and 
Ibrahim, H. Baker (2010): Reassessment 
of the Groundwater Salinity in Sohag 
Using GIS. The 5th Int. Conf. for 
Develop. and the Env. In the Arab world. 
Assiut University Center for 
Environmental Studies, Egypt. 
Gameh, Rasha M. A. (2008): Spatial Variability 
Hydraulic properties of New Valley Soils, 
Egypt. MSc Thesis, Assiut University. 
Ghoubachi, S.Y., A.M. Baraka (2006): 
Geological settings and their bearing 
upon the occurrences of shallow water 
bearing horizon in North El-Kharga 
depression, Western Desert, Egypt. 
Desert Research Center. 
Jackson, M.L. (1967): Soil chemical analysis. 
Asia publishing house, Madars, India. 
Jackson, M.L. (1969): Soil chemical analysisadvanced course. Published by author, 
Soil Sci. Dept., Wisconsin Univ., 
Madison, USA. 
McLean, E.O. (1982): Soil pH and lime 
requirement page 199-233. In Page, A.L., 
R.H. Miller and D.R. Keeney (eds.) 
Methods of soil analysis. Part 2-Chemical 
and Microbiological Properties. (2nd Ed.) 
Agronomy 9 soil Sci. Soc. Am, Madison, 
WI, USA. 
Nelson, R.E. (1982): Carbonate and gypsum. 
Cited from USDA (1991), Soil Survey 
Laboratory Methods Manual. Soil 
Survey Investigations Report No. 42 
Version 1: 280-284. 
Perez-Sirvent, C., M. J. Martinez-Sanchez, J. 
Vidal and A. Sanchez (2003): The role of 
low-quality irrigation water in the 
desertification of semi-arid zones in 
Murcia, SES pain. Department of 
Agricultural Chemistry, Geology and 
Pedology, Faculty of Chemistry, 
University of Murcia, E-30071 Murcia, 
Spain. 
Rhoades, J.D. (1982): Soluble Salts. In: A.L. 
Page, R. H. Miller and D. R. Keeney 
(eds). Methods of Soil Analysis, part 2- 
Chemical and Microbiological Properties. 
(2nd Ed.). A soil Sci. Soc. Am, Madison, 
WI, USA. 
Richards, L.A. (1954): Diagnosis and improvements saline and alkali soils. U.S. Salinity 
Laboratory DA, US Dept. Agr. Hbk 60, 
160 p. 
Robinson, C. A., A. Werwer, F. El-Baz, M. ElShazly, T. Fritch and T. Kusky (2007): 
The Nubian Aquifer in Southwest Egypt. 
Hydrogeology Journal 15: 33–45.