@book{UBHD-1060090, author={Douglas, Mary}, title={Natural symbols}, subtitle={explorations in cosmology}, edition={2. ed.}, publisher={Barrie & Jenkins}, address={London}, year={1973}, pages={218 S.}, language={eng}, isbn={0-214-66855-X and 978-0-214-66855-5}, library={UB [Signatur: 74 B 4057] ; IR [Signatur: D 20404.4]}, }