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By services, 21 December, 2016 14 June 2010 External T.I. 2010-0368661E5 - Canada - Sultanate of Oman Income Tax Convention
By services, 21 December, 2016 8 September 2010 External T.I. 2010-0369311E5 - Transactions with a Delaware LLC
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By services, 17 December, 2016 20 July 2011 External T.I. 2010-0386881E5 - Forgiveness of debt and Foreign Exchange Gain
