| |||
| space research Research involving studies of all aspects of environmental conditions beyond the atmosphere of the earth | |||
|
urkutatas : 1 phrase in 1 subject |
| Astronautics | 1 |
| |||
| space research Research involving studies of all aspects of environmental conditions beyond the atmosphere of the earth | |||
|
urkutatas : 1 phrase in 1 subject |
| Astronautics | 1 |