@BOOK{NAP21334, title = "Symposium on the Laboratory Propagation and Detection of the Agent of Hepatitis", doi = "10.17226/21334", url = "https://nap.nationalacademies.org/catalog/21334/symposium-on-the-laboratory-propagation-and-detection-of-the-agent-of-hepatitis", year = 1954, publisher = "The National Academies Press", address = "Washington, DC" }