Kata Kunci Pencarian:
- Bunuh diri
- Polonium
- International Federation of Chemical, Energy, Mine and General Workers' Unions
- International Federation of Chemical, Energy and General Workers' Unions
- International Federation of Petroleum and Chemical Workers
- World Federation of Energy, Chemical and Various Industry Workers' Unions
- ICEF
- International Federation of Building and Wood Workers
- Japanese Federation of Chemical Workers' Unions
- United Steelworkers
- International Metalworkers' Federation
- Transport and General Workers' Union
