@book{ BB09071701, author = "Valadez, Joseph J.", title = "Assessing child survival programs in developing countries : testing lot quality assurance sampling", publisher = "Dept. of Population and International Health, Harvard School of Public Health ; Distributed by Harvard University Press", year = "1991", series = "Harvard series on population and international health", number = "", URL = "https://ci.nii.ac.jp/ncid/BB09071701" }