TY - CHAP A1 - Roy, T.K. A1 - Ram, F. T1 - Comparability issues in large sample surveys-some observations Y1 - 2004 A3 - Roy, T.K. A3 - Guruswamy, M. A3 - Arokiasamy, P. T2 - Population, health and development in India: Changing perspectives CY - New Delhi PB - Rawat Publications ER -