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Long-term monitoring of flat roof waterproofing

Long-term monitoring of underground geological

structure and waterworks waterproofing

Northern Gold Holding Company Ltd.Reg.no: 44103086573,

Regus Riga City Centre, Tērbatas 14-2, Rīga, LV-1011, Latvia, EU Phone/Fax: +371 67869485,  email: info@nghc.eu

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