Epidemiological surveillance :  report of the Regional Director for the period 1972-1973. 

 - [Brazzaville],  1974. 
 - AFR/CD/46 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diseases -- Reporting -- Africa.--Diseases -- Reporting -- Africa.--Diseases -- Reporting -- Africa.<br/>Epidemiology.