By A. C. DeGraff. Price, 35 cents. Pp. 20, with 6 pages of illustrations. New York: New York Tuberculosis and Health Association, 1931.
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This pamphlet has been prepared by the Research Subdivision of the Heart Committee of the New York Tuberculosis and Health Association. The key contains fifty standard conditions, their definitions and illustrated electrocardiograms.
Criteria for the Interpretation of Electrocardiograms.. Am J Dis Child. 1932;43(2):527. doi:10.1001/archpedi.1932.01950020259032