On Certain Improvements on Photographic Processes Described in a Former Communication.
On Certain Improvements on Photographic Processes Described in a Former Communication.
On Certain Improvements on Photographic Processes Described in a Former Communication Herschel, J Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843). 1837-01-01. 4:398–399