1
Published: [1980]
Superior document: World Fertility Survey Confernce : Methodology session 7
2
Published: 1982
Superior document: Technical bulletins / World Fertility Survey, International Statistical Institute 11
3
4
Published: 1980
Superior document: Technical bulletins / International Statistical Institute, World Fertility Survey 4
5
Published: 2009
Superior document: Policy & research papers / International Union for the Scientific Study of Population 21
6
Published: 1980
Superior document: Comparative studies / World Fertility Survey, International Statistical Institute 16