Letter: More on the cold war.
D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D001205:Ascorbic Acid / Q000627:therapeutic use; D003139:Common Cold / Q000188:drug therapy; D004032:Diet; D010406:Penicillins / Q000627:therapeutic use; D012141:Respiratory Tract Infections / Q000188:drug therapy*; D013752:Tetracycline / Q000627:therapeutic use
D000900:Anti-Bacterial Agents; D010406:Penicillins; D013752:Tetracycline; D001205:Ascorbic Acid