TY  - RPRT
TI  - Present situation with formalin-killed poliomyelitis vaccine.
AU  - J KNOWELDEN
PY  - 1959
DO  - 10.1136/bmj.1.5122.620
UR  - https://pubmed.ncbi.nlm.nih.gov/13629068/
ID  - 13629068
ER  -