TY  - BOOK
AU  - Pan American Health Organization
AU  - World Health Organization
TI  - First international conference on live poliovirus vaccines: Science publication No - 44
U1  - 615.371 
PY  - 1959///
CY  - Washington
PB  - Pan American Health Organization
KW  - Virology
KW  - Pharmacology -- Therapeutics
N1  - Poliomyelitis, Poliovirus vaccines, Immunization, Virology, International conference
ER  -