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2. The Problem of the Solitary Lung Tumors;Effler;Surgery,1948
3. Papanicolaou, G.: Personal communication.
4. Pool, J. L., Watson, W. L., and Diamond, H. D.: Asymptomatic Intrathoracic Tumors. To be published.
5. The Incidence of Multiple Primary Malignant Tumors and a Report of a Case With Three Primary Carcinomata;Spain;New York State J. Med.,1949