1.
Geneva; World Health Organization; 1954.
Monography
in English, French
| WHO IRIS
| ID: who-41130
2.
Genève; Organisation mondiale de la Santé; 1954.
Monography
in English, French
| WHO IRIS
| ID: who-38804
3.
Bull. W.H.O. (Print)
; 8(5-6): 613-631, 1953.
Article
in English
| WHO IRIS
| ID: who-266292