1. Nomadic fertility as compared with that of rain cultivators in Sudan;Henin;Proceedings of the International Population Conference,1969
2. Breast-feeding and infant mortality;Knodel;Population Studies,1967
3. Modernization and the level of fertility in western Nigeria;Olusanya;Proceedings of the International Population Conference,1969
4. Birth Intervals: Structure and Change;Potter;Population Studies,1963
5. A case of birth interval dynamics;Potter;Population Studies,1965