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ANGELA, And ALEX And REBECCA. (2012). DANIEL YERGIN THE QUEST . London: PENGUIN BOOKS.

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ANGELA, And ALEX And REBECCA. DANIEL YERGIN THE QUEST. London: PENGUIN BOOKS, 2012. Text.

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ANGELA, And ALEX And REBECCA. DANIEL YERGIN THE QUEST. London: PENGUIN BOOKS, 2012. Text.

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ANGELA, And ALEX And REBECCA. DANIEL YERGIN THE QUEST. London: PENGUIN BOOKS, 2012. Print.