deutsch   english who we are what we do   field of activity     oel / gas     geothermal energy     hdd / microtunnelling     r+d     hse   references   where we are   contact us Impressum Impressum   Planungsbüro Back   Manager: Michael Back   Adress::    Buchberger Straße 115 94560 Offenberg Tel.: +49 (0) 9905 70 70 115 Fax: +49 (0) 9905 70 70 167 info@planungsbuero-back.de www.planungsbuero-back.de   Memberships:           Tax-Nr.:    108 / 202 / 10102