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2. Secondary Tumours of the Mandible;Cohen;Ann. Roy. Coll. Surgeons, England,1958
3. Specimen of Carcinoma of Tongue Secondary to Primary Growth in Bronchus;Fitzwilliams,1938
4. The Comparative Size and Structure of Tumor Cells and Clumps in the Blood, Bone Marrow, and Tumor Imprints;Moore;Cancer,1960
5. Cancer Cells in Blood Stream;Pool;Am. J. Cancer,1934