1. Permissible composition and concentration of irrigation waters;Kelley;Proc. ASCE,1940
2. The quality water for irrigation use;Wilcox;US Dept. Agric. Bull.,1948
3. Modified classification procedure for rating irrigation waters;Handa;Soil Sci,1964
4. Modified Hill-piper diagram for presentation of water analysis data;Handa;Curr, Sci.,1965
5. Study and interpretation of the chemical characteristics of natural water;Hem;USGS Water Supply Paper,1985