| |||
| medida de distância por eco | |||
|
echo-ranging : 9 phrases in 4 subjects |
| Communications | 6 |
| Earth sciences | 1 |
| Electronics | 1 |
| Fish farming pisciculture | 1 |
| |||
| medida de distância por eco | |||
|
echo-ranging : 9 phrases in 4 subjects |
| Communications | 6 |
| Earth sciences | 1 |
| Electronics | 1 |
| Fish farming pisciculture | 1 |