TY  - RPRT
TI  - IMMUNIZATION AGAINST TYPHOID AND PARATYPHOID FEVERS.
AU  - M T ASHCROFT
PY  - 1964
DO  - 10.1177/000992286400300703
UR  - https://pubmed.ncbi.nlm.nih.gov/14192459/
ID  - 14192459
ER  -