P33 Effective and low-cost improvement for environmental tobacco smoke
P33 事業所における効果的な空間分煙対策

I. Akiyama
1999 SANGYO EISEIGAKU ZASSHI  
doi:10.1539/sangyoeisei.kj00001990948 fatcat:ee26me7lqnecpbipgq5hfivzye