1. Copper status in soils of Madhya Pradesh;Agrawal;J. Indian Soc. Soil. Sci.,1966
2. A study of extractable soil cobalt of the southeastern United States;Alban;Soil. Sci. Soc. Am. Proc,1960
3. Selenium in Agriculture.;Anderson,1961
4. Availability of manganese in some Indian soils growing sugarcane;Anjaneyulu;J. Indian Soc. Soil. Sci.,1964
5. Trace elements in some Welsh upland soils;Archer;J. Soil. Sci.,1963