1. Udani, P. M. (1963). Physical growth in children in different socio-economic groups.Indian J. Chld. Hlth. 12, 593.
2. Ulkouskaya, R. A., Puri, B., Chowdhury, N. R., Luthra, C. K., Das, S., and Kumari, R. (1961). Physical development of infants in New Delhi in first year of life.Ibid. 10, 211.