TY  - GEN
AU  - Kostrzewski,J
TI  - [Poliomyelitis]
SN  - 0033-2100
PY  - 1980///0616
KW  - Child, Preschool
KW  - Female
KW  - Humans
KW  - Male
KW  - Poland
KW  - Poliomyelitis
KW  - epidemiology
N1  - Publication Type: Journal Article
ER  -