TY  - RPRT
TI  - Human immunization in developing countries: practical and theoretical problems and prospects.
AU  - S C Arya
PY  - 1994
DO  - 10.1016/0264-410x(94)90152-x
UR  - https://pubmed.ncbi.nlm.nih.gov/7887021/
ID  - 7887021
ER  -