Gonzalez, C.L. <br/><br/>
Mass campaigns and general health services. 

 - 87p. 
 - Public health papers ; no. 29. .
<br/><br/><label>ISBN: </label>92-4-130029-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mas screening<br/>Preventive health services