TY - RPRT TI - Tetrapyrrole utilization by Bacteroids ruminocola. AU - D R McCall AU - D R Caldwell PY - 1977 DO - 10.1128/jb.131.3.809-814.1977 UR - https://pubmed.ncbi.nlm.nih.gov/893342/ ID - 893342 ER -