00669nam a2200181Ia 4500 304.60723 W926.MD "Workshop on methodology of demographic sample surveys", Copenhagen, Denmark, 24 Sept.- 3 Oct., 1969 Methodology of demographic sample surveys; report of the interregional workshop New York United Nations 1971 iii, 311p. U N Economic and Social affairs Deptt of- Statistical papers 51 0 0 0 0 ISI ISI 1998-05-26 0 304.60723 W926.MD DP5448 2019-02-14 00:00:00 2019-02-14 BK (United Nations economic and social affairs, dept. of-. statistical papers series M; no.51) 191 191 191