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