| 11. | The estimated cost of the research is $ 2 . 5 billion.
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| 12. | Electric lighting was installed 1939 at an estimated cost of ?08.
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| 13. | Estimated cost : $ 5 . 1 billion over five years.
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| 14. | The A?as the estimated cost of construction of the dam.
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| 15. | They will bear the brunt of the estimated cost of expansion.
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| 16. | The estimated cost of the stadium would be $ 375 million.
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| 17. | The facility was constructed at an estimated cost of P300 million.
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| 18. | The estimated cost is $ 500 million to $ 600 million.
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| 19. | He did not have an estimated cost of the aerial hunts.
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| 20. | The estimated cost of replacing the tunnels was $ 900 million.
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