| |||
| система научно-технической информации | |||
|
system of scientific and technical information : 2 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Patents | 1 |
| |||
| система научно-технической информации | |||
|
system of scientific and technical information : 2 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Patents | 1 |