@book{UBHD-1064196, author={Welling, William}, title={Collectorsʹ Guide to nineteenth-century photographs}, publisher={Collier Macmillan}, address={New York [u.a.]}, year={1976}, pages={XVI, 204 S.}, language={eng}, isbn={0-02-000960-7 and 978-0-02-000960-3}, library={UB [Signatur: 77 C 923]}, }