Swann implemented.
D000083:Acetanilides; D000821:Animal Feed; D000900:Anti-Bacterial Agents / Q000592:standards*; D002751:Chlortetracycline; D011307:Drug Prescriptions; D006076:Government; D010118:Oxytetracycline; D010406:Penicillins; D013449:Sulfonamides; D006113:United Kingdom; D014730:Veterinary Medicine
D000083:Acetanilides; D000900:Anti-Bacterial Agents; D010406:Penicillins; D013449:Sulfonamides; D002751:Chlortetracycline; D010118:Oxytetracycline