 |
|
perforation : 233 phrases in 33 subjects |
| Agriculture | 3 |
| Automated equipment | 16 |
| Aviation | 2 |
| Cables and cable production | 2 |
| Chemistry | 1 |
| Coal | 15 |
| Commerce | 1 |
| Communications | 16 |
| Computers | 3 |
| Construction | 5 |
| Cultural studies | 10 |
| Earth sciences | 6 |
| Economics | 2 |
| Food industry | 1 |
| General | 7 |
| Health care | 1 |
| Immigration and citizenship | 1 |
| Industry | 5 |
| Information technology | 54 |
| Labor law | 2 |
| Life sciences | 3 |
| Materials science | 1 |
| Mechanic engineering | 4 |
| Medical | 26 |
| Metallurgy | 11 |
| Natural sciences | 3 |
| Paleontology | 1 |
| Technology | 5 |
| Telegraphy | 3 |
| Textile industry | 2 |
| Transport | 3 |
| Wood processing | 3 |
| Work flow | 15 |