@book{UBHD-1057812, author={D{\"o}rrenhaus, Fritz and Becker, Hans}, title={Der Ritten und seine Erdpyramiden}, publisher={Steiner}, address={Wiesbaden}, year={1966}, pages={VIII, 112, XV S.}, language={ger and eng}, number={ARRAY(0x5592a2430748)}, series={K{\"o}lner geographische Arbeiten}, note={Zsfassung in engl. Sprache}, keywords={Ritten / Erdpyramide}, library={UB [Signatur: 68 B 613]}, }