F A Walker. Show Affiliations »
Abstract
Mesh: See more » Health Services/economicsHealth Services/historyHistory, 20th CenturyInsurance, Health/economicsInsurance, Health/historyPolitical Systems/historyUSSRUnited States
Year: 1979 PMID: 397839
Source DB: PubMed Journal: Bull Hist Med ISSN: 0007-5140 Impact factor: 1.314