TY - RPRT TI - Taxonomy of the Clostridia: ribosomal ribonucleic acid homologies among the species. AU - J L Johnson AU - B S Francis PY - 1975 DO - 10.1099/00221287-88-2-229 UR - https://pubmed.ncbi.nlm.nih.gov/168308/ ID - 168308 ER -