Feijó, Ricardo Becker <br/><br/>
Immunizations: three centuries of success and ongoing challenges.  [electronic resource] 

 -  Jornal de pediatria  Jul 2006 
 - S1-3 p.  digital 
<br/><br/> Publication Type: Editorial; Historical Article 
<br/><br/><label>ISSN: </label>0021-7557 
<br/><br/><label>Standard No.: </label>10.2223/JPED.1497  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Brazil<br/>History, 18th Century<br/>History, 19th Century<br/>History, 20th Century<br/>Humans<br/>Immunization--history<br/>Immunization Programs<br/>Smallpox Vaccine--history<br/>Vaccines--history