ridged : 45 phrases in 14 subjects |
Agriculture | 20 |
Amphibians and reptiles | 2 |
Antennas and waveguides | 1 |
Communications | 2 |
Earth sciences | 1 |
Electronics | 1 |
Ichthyology | 3 |
Industry | 3 |
Life sciences | 3 |
Mechanic engineering | 1 |
Medical | 5 |
Municipal planning | 1 |
Technology | 1 |
Transport | 1 |