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subindex |
分索 引 : 39 phrases in 12 subjects |
Agriculture | 1 |
Aviation | 4 |
Desert science | 1 |
Earth sciences | 1 |
Electronics | 7 |
General | 2 |
Information technology | 7 |
Librarianship | 2 |
Oil / petroleum | 1 |
Shipbuilding | 1 |
Technology | 10 |
Telecommunications | 2 |