| Type | Journal Article - Postgraduate Medical Journal |
| Title | Survival Rate at Middle Age in Developing and Western Populations |
| Author(s) | |
| Volume | 50 |
| Issue | 579 |
| Publication (Day/Month/Year) | 1974 |
| Page numbers | 29-32 |
| URL | http://pmj.bmj.com/content/50/579/29.full.pdf |
| » | South Africa - Population Census 1960 |