Peters, PWJGarbis-Berkvens, JMVogel, LCeds2025-03-112025-03-111985https://rivm.openrepository.com/handle/10029/629883Immunisation as a starter for primary health care in developing countriesArticleTrop Geogr Med 37 (suppl. 3 1985), iv+89 pp2025-03-11