TY  - RPRT
TI  - World Health Organization Expanded Programme on Immunization: progress and evaluation report.
AU  - R H Henderson
PY  - 1989
DO  - 10.1111/j.1749-6632.1989.tb27358.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2629592/
ID  - 2629592
ER  -