Citations
'Photographisches Opalograph-Druckverfahren', GBR/3296/Maps/CCSA.IM_493_5, IM_493_5. Cambridge University Library. |
|
'Photographisches Opalograph-Druckverfahren', GBR/3296/Maps/CCSA.IM_493_5, IM_493_5. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239907 Accessed November 15, 2024. |