Practical Strength Training Guide for Self-Defense & Martial ArtsRalph Haenel · First published 2016Open the Tome
Schlesisch Deutsche Kueche, Wie Bei Uns Zu Hause Gekocht WurdeRalph Haenel · First published 2005Open the Tome
Handbook of terrestrial heat-flow density determinationRalph Haenel · First published 1988Open the Tome
Atlas of subsurface temperature in the European CommunityRalph Haenel · First published 1979Open the Tome