title: Observations on the vitamin B12 content of Propionibacterium freundenreichii & its possible utilization.
mesh_terms: D003035:Cobalt / Q000494:pharmacology; D003470:Culture Media; D011424:Propionibacterium / Q000032:analysis* / Q000187:drug effects; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D003470:Culture Media; D003035:Cobalt; D014805:Vitamin B 12