Hem, J.D.

Hem, J.D., 1985. Study and interpretation of the chemical characteristics of natural water 3rd. ed.ᵉ éd., (United States Geological Survey water-supply paper no. 2254) Alexandria, Egypt: US Geological Survey. Available at: https://fr.ircwash.org/sites/default/files/241.3-85ST-1290.pdf.