(let - acti
- (lethal dose) ld50
- 1,1-dichloro-ethane
- 1,1-dichloropropane
- 1,1-difluoro-ethane
- 1,2-dibromoethane
- 1,2-dichloro-,1,2,2-tetrafluoroethane
- 1,2-dichloroethane
- 1,2-dichloropropane
- 2-propanol
- A-horizon
- a-waste
- A-weighted
- AAA
- AABE
- AABW
- AACC
- AAEE
- AAFU
- AAGS
- aapa bog