00613nam a22001817a 4500 BD-DhUL 20170411151936.0 170411b1979 xxu||||| |||| 00| 0 eng d BD-DhUL 312 UNP United Nations Prospects of population : methodology and assumptions ; papers of the ad hoc group of experts on demographic projections, United Nations headquarters,7-11 November 1977 / New York : United Nations, 1979 292 p. : ill.: 28 cm. Population studies no.67 Statistics ddc REF 177133 177133 0 0 ddc 0 312_000000000000000_UNP 1 REF 313638 DUL DUL UNC 2017-04-11 Gift 312 UNP D15130 2017-04-11 1 2017-04-11 REF