TY  - RPRT
TI  - [Effect of influenza vaccination on the decrease of morbidity associated with work inability at the Povázské Strojírny in Povázská Bystrica].
AU  - J Bullová
PY  - 1973
UR  - https://pubmed.ncbi.nlm.nih.gov/4730925/
ID  - 4730925
ER  -