TY  - BOOK
AU  - Pan American Health Organization
AU  - World Health Organization
TI  - Second international conference on live polio virus vaccines
U1  - 615.371 
PY  - 1960///
CY  - Washington
PB  - Pan American Health Organization
KW  - Virology
KW  - Pharmacology -- Therapeutics
N1  - Polio, Vaccination, Virology, Public Health
ER  -