environmentally-safe: 20 phrases in 11 subjects |
Ecology | 4 |
Energy industry | 1 |
European Bank for Reconstruction and Development | 2 |
General | 1 |
Makarov | 3 |
Nanotechnology | 2 |
Perfume | 2 |
Production | 1 |
Sakhalin S | 1 |
Solar power | 1 |
Weapons of mass destruction | 2 |