The demand for health a theoretical and empirical investigation
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
National Bureau of Economic Research
1972.
|
| Cyfres: | Occasional paper National Bureau of Economic Research
119 |
| Pynciau: |