1
Argitaratua: 1981
Superior document: Comparative studies / World Fertility Survey, International Statistical Institute 13
2
Argitaratua: 1984
Superior document: Comparative studies / International Statistical Institute, World Fertility Survey 40
3
Argitaratua: 1984
Superior document: Comparative studies / International Statistical Institute, World Fertility Survey 41
4
Argitaratua: 1984
Superior document: Scientific reports / International Statistical Institute, World Fertility Survey 71
5
Argitaratua: 1983
Superior document: Comparative studies / World Fertility Survey, International Statistical Institute 23