TY  - RPRT
TI  - Poliomyelitis virus variation.
AU  - J T SYVERTON
PY  - 1955
DO  - 10.1111/j.1749-6632.1955.tb42547.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13340597/
ID  - 13340597
ER  -