The weapon in question is thought to be the SA-17 - a modern Russian system which comprises four missiles on a tracked launcher, that also carries an associated radar system.

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Here, it is noted that the system comprises of only inorganic materials, which can reduce the CO2 with low energy loss.

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That group comprises more than 1, 000 aircraft across Air Canada, AirTran Airways (which recently merged with Southwest Airlines), Alaska Airlines, American Airlines, Delta Air Lines, Frontier Airlines, United Airlines, US Airways and Virgin America.

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Mr Mitarai told The Economist recently that he has a rough cut-off rule for allocating investment: anything for which labour comprises more than 5% of production costs can be done in China or some other low-wage country.

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