The computerized information system of the Expanded Programme on Immunization
الإستشهاد
Hu, D. J., Torel, Carole & Kim-Farley, Robert J. (1994). The computerized information system of the Expanded Programme on Immunization. World health forum 1994 ; 15(3) : 238-239 https://iris.who.int/handle/10665/52596