| |||
mola central | |||
espiral | |||
| |||
volutas |
spiraal : 29 phrases in 12 subjects |
Agriculture | 1 |
Chemistry | 5 |
Coal | 1 |
Construction | 2 |
Earth sciences | 1 |
Electronics | 4 |
Industry | 2 |
Materials science | 2 |
Mechanic engineering | 3 |
Medical | 6 |
Technology | 1 |
Transport | 1 |