Action of charred paper on the photographic plate and a method of deciphering charred records
By: by Raymond Davis, photographic technologist, Bureau of Standards.  Issued October 18, 1922.
Publisher: Govt. Print. Off.
Published: 1922
Place of publication: Washington
Language: eng
Number of pages: 450
Subjects: Photocopying.
Other titles: Method of deciphering charred records.
Notes: Plate printed on both sides.
Running title: Method of deciphering charred records.