NavGeneral InfoEmail Print Geography India (IND) Time period covered 01/1970 - 12/1980 Data type Scientific literature Keywords Idiopathic intellectual disability Citation Authors Narayanan HS Journal Int J Ment Health Volume 10 Issue 1 Pages 28-36 Publication year 1981 Suggested citation Narayanan HS. A study of the prevalence of mental retardation in southern India. Int J Ment Health. 1981; 10(1): 28-36. GHDx Entry last modified on: Mar 3, 2019