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7. Interest in joint venture (Tables) | 12 Months Ended
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Dec. 31, 2018
Interest In Joint Venture Tables Abstract |
Interest in joint ventures |
Percentage interest held |  |  | Equity attributable to the owners
in capital stock and votes |  |  | 12.31.18 | 12.31.17
SACME | 50.00% |  | 8,844 | 10,693

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