%A Sheps, Mindel C. %A Ridley, Jeanne Clare %A University of Pittsburgh. Graduate School of Public Health %A Symposium on Research Issues in Public Health and Population Change, 1964, University of Pittsburgh %T Public health and population change : current research issues %I Univ. of Pittsburgh Press %D 1965 %U https://ci.nii.ac.jp/ncid/BA2884173X