TY  - BOOK
ED  - 6-10 jun. 1960
ED  - International Conference on Live Poliovirus Vaccines, 2
ED  - 
ED  - 
TI  - Live poliovirus vaccines
CY  - Washington
KW  - Poliomielitis
KW  - Virosis
N1  - Intitución patrocinadora: PanAmerican Health Organization
ER  -