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MLA Citation
Unknown. Baubetrieb und Bauverfahren im Tunnelbau. Place of publication not identified : Ernst & Sohn, 2012. http://access.bl.uk/ark:/81055/vdc_100101837438.0x000001
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Unknown. Baubetrieb und Bauverfahren im Tunnelbau. Place of publication not identified : Ernst & Sohn, 2012. http://access.bl.uk/ark:/81055/vdc_100101837438.0x000001