TY  - RPRT
TI  - Titration method for an ointment type smallpox vaccine in embryonated chicken eggs.
AU  - B Mettier
AU  - I Haenzel
AU  - M Majer
PY  - 1974
DO  - 10.1016/s0092-1157(74)80010-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4416657/
ID  - 4416657
ER  -