TY  - GEN
AU  - Kostrzewski,J
AU  - Piatkowski,J
TI  - [Infectious diseases in Poland 1987]
SN  - 0033-2100
PY  - 1989///0920
KW  - Adult
KW  - Age Factors
KW  - Child
KW  - Communicable Diseases
KW  - epidemiology
KW  - Humans
KW  - Poland
N1  - Publication Type: Comparative Study; Journal Article
ER  -