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2. The histogenesis and biologic behavior of primary human malignant melanomas of the skin.;Clark;Cancer Res.,1969
3. Lentigo maligna and lentigomaligna melanoma.;Clark;Amer. 3. Path,1969
4. Principles of Medical Statistics;Hill,1966
5. Senile freckles;Hutchinson;Arch. Surg. (Lond.),1892