DIN EN ISO 17628 E:2013-08 Geotechnical Investigations and Testing Geothermal Testing Determination of Thermal Conductivity of Soil and Rock Using Borehole Heat Exchangers (Draft)
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)
1970DIN EN ISO 17628 E:2013-08 Geotechnical Investigations and Testing Geothermal Testing Determination of Thermal Conductivity of Soil and Rock Using Borehole Heat Exchangers (Draft)