By Roentgenography Stated Reduction of the Calcified Focus in Primary Pulmonary Tuberculosis in Childhood

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Beitzke H. : »Die pathologische Anatomie» in »Handbuch der Kindertuberkulose» of Engel and Pirquet, 1930 I, 159. See in this connection also

Feldman W. H. Baggenstoss A. H. : The residual infectivity of the primary complex of tuberculosis. Am. J. Pathol. 14, 473, 1938.