Bibtex-Export
@book{ Spencer1889, title = {System der synthetischen Philosophie. VIII. Band: Die Principien der Sociologie. III. Band}, author = {Spencer, Herbert}, year = {1889}, pages = {X, 820}, address = {Stuttgart}, publisher = {Schweizerbart}, urn = {https://nbn-resolving.org/urn:nbn:de:0168-ssoar-54676-2}, }