1. CHAPARAS AND HEDRICK
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4. A reference system for antigens of Mycobacterium tuberculosis;Janicki B. W.;Amer. Rev. Resp. Dis.,1971
5. The acquired resistance to tuberculosis induced by BCG vaccine assayed by a quantitative method on red mice. II. Vaccination effect of BCG strains strongly or moderately virulent for hamsters;Jespersen A.;Acta Tuberc. Pneunol. Scand.,1963