(Q39335346)
Statements
1 reference
The introduction of jet injection mass vaccination into the national smallpox eradication program of Brazil (English)
1 reference
J D Millar
1 reference
L Morris
1 reference
A Macedo Filho
1 reference
T M Mack
1 reference
W Dyal
1 reference
A A Medeiros
1 reference
1 March 1971
1 reference
1 reference