[Current problems in the use of new antibiotic substances].
D000900:Anti-Bacterial Agents; D009675:Novobiocin; D010406:Penicillins; D013752:Tetracycline
D000900:Anti-Bacterial Agents; D010406:Penicillins; D009675:Novobiocin; D013752:Tetracycline
ANTIBIOTICS; NOVOBIOCIN; PENICILLIN; TETRACYCLINE