title: Sources in nursing historical research: a thorny methodological problem. 1995.
authors.forename: D
authors.initials: D
authors.lastname: Mansell
mesh_terms: D006663:Historiography; D049673:History, 20th Century; D006801:Humans; D015399:Nursing Research / Q000266:history* / Q000379:methods; D012107:Research Design