DIN EN ISO 17628:2015-12 Geotechnical investigation and testing - Geothermal testing - Determination of thermal conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015); German version EN ISO 17628:2015
2015DIN EN ISO 17628:2015-12 Geotechnical investigation and testing - Geothermal testing - Determination of thermal conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015); German version EN ISO 17628:2015
2015DIN EN ISO 17628:2015 Geotechnical investigation and testing - Geothermal testing - Determination of thermal conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015)