A STUDY IN ACTIVE IMMUNIZATION AGAINST EPIDEMIC INFLUENZA AND PNEUMOCOCCUS PNEUMONIA AT LETCHWORTH VILLAGE1

Abstract
MORRIS SIEGEL, RALPH S. MUCKENFUSS, MORRIS SCHAEFFER, HARRIET LESLIE WILCOX, ANN G. LEIDER; A STUDY IN ACTIVE IMMUNIZATION AGAINST EPIDEMIC INFLUENZA AND PNEUM

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