REFERENCES
- Knobloch, H, and Pasamanick, B. (1959). Distribution of intellectual potential in an infant population in. An Epiderminology of Mental Disorder. Washington; Amer. Ass. Adv. Sci. Publ. No. 60.
- Lewis, Professor Sir Aubrey (1960). The Study of Defect, Am. Journ. Psychiat. 117, 289.
- Pasamanick, B. (1959). Am. J. Ment. Def. 64, 316.
- Roberts, J. A. Fraser (1910) . Introduction to Medical Genetics.