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2. BETTENCOURT A. AND BORGES 1908 Archivos do Real Instituto Bacterilogica Canara Pestana Tome II Fasc. II 221 and 245.
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4. Zeitschr. f;FROMME W.;Hyg.,1910
5. HOAG
1899 Ferreira Horta and Paredes cited by Fromme.