12th Iranian & 3rd Regional Tunnelling Conference: Tunnelling & Climate Change.

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12th Iranian & 3rd Regional Tunnelling Conference: Tunnelling & Climate Change.

12th Iranian & 3rd Regional Tunnelling Conference: Tunnelling & Climate Change.

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12th Iranian & 3rd Regional Tunnelling Conference: Tunnelling & Climate Change
12th Iranian & 3rd Regional Tunnelling Conference: Tunnelling & Climate Change
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12th Iranian & 3rd regional tunneling conference and exhibition were held In Tehran from Nov 27th-29th 2017 and Sadafzar participated as an exhibitor.

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