Nuovo soggettario BNCF Biblioteca Nazionale Centrale Firenze Ministero della Cultura
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            • • • • • • • • Organismi
           • • • • • • • [Organismi diversi da vegetali, animali, umani]
          • • • • • • Procarioti
         • • • • • Batteri
        • • • • Firmicutes
       • • • Bacilli
      • • Lactobacillales
     • Streptococcaceae
    ►Streptococcus
         •  Streptococcus pneumoniae
     •  Streptococcus pyogenes
     •  Streptococcus viridans