mattress: 50 phrases in 18 subjects |
Agriculture | 1 |
Chemical fibers | 1 |
Chemistry | 2 |
Construction | 2 |
Electronics | 1 |
General | 9 |
Hobbies and pastimes | 1 |
Hydrology | 1 |
Industry | 7 |
Life sciences | 1 |
Mechanic engineering | 1 |
Medical | 7 |
Municipal planning | 4 |
Patents | 2 |
Soil science | 1 |
Technology | 3 |
Textile industry | 4 |
Transport | 2 |