First WHO Seminar on Expansion of the Use of Immunization in Developing Countries, Kumasi, Ghana, 12-19 November 1974 . 

 - 32 p. 
 - WHO offset publications ; no. 16 .
<br/><br/><label>ISBN: </label>9241700165 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Immunization<br/>Communicable disease control--Methods<br/>Developing countries