title: Ecology of R factors. A study of urban and remote communities and their environments.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects / Q000302:isolation & purification*; D004352:Drug Resistance, Microbial; D004463:Ecology; D004926:Escherichia coli / Q000302:isolation & purification; D005111:Extrachromosomal Inheritance; D005243:Feces / Q000382:microbiology; D006801:Humans; D012424:Rural Population; D012988:Soil Microbiology; D013019:South Africa; D014505:Urban Population; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents