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| Angielski tezaurus | |||
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| systems application (ssn); system app (ssn); systems app (ssn) | |||
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| system app (ssn); system application (ssn); systems app (ssn) | |||
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system application : 11 do fraz, 7 tematyki |
| Astronautyka | 1 |
| Komunikacja | 1 |
| Polityka | 2 |
| Pospolicie | 3 |
| Prawo | 2 |
| Technologia informacyjna | 1 |
| Transport | 1 |