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natural-technological disaster (Rus: most hits MichaelBurov); natech disaster (Rus: most hits MichaelBurov); na-tech disaster (Rus: most hits MichaelBurov); natural-technological hazard (Rus: most hits MichaelBurov); natech hazard (Rus: most hits MichaelBurov); na-tech hazard (Rus: most hits MichaelBurov) |
природно -техногенная катастрофа: 5 phrases in 1 subject |
Security systems | 5 |