1. naḥn aṣiḥāʼ bifaḍl altaṭʻīm Publication: Dawlat al-qaṭar: Wizārat al-ṣiḥḥah al-ʻāmmah: Idārat al-ṣiḥḥah al-wiqāʼīah [Qatar : Ministry of Public Health, 19--] Subject(s): Poliovirus Vaccine, OralChild Welfare