xi, 611 pages including illustrations (maps) tables, diagrams ; 24 cm

Twenty-five years of health progress : a study of the mortality experience among the industrial policyholders of the Metropolitan Life Insurance Company 1911 to 1935 / by Louis I. Dublin ... and Alfred J. Lotka ... with the collaboration of the staff of the Statistical Bureau.

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Twenty-five years of health progress : a study of the mortality experience among the industrial policyholders of the Metropolitan Life Insurance Company 1911 to 1935 / by Louis I. Dublin ... and Alfred J. Lotka ... with the collaboration of the staff of the Statistical Bureau.