DIN 19051-21:1991-03
Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers

Standard No.

DIN 19051-21:1991-03

Release Date

1991

Published By

German Institute for Standardization

Latest

DIN 19051-21:1991-03

DIN 19051-21:1991-03 history

• 1991 DIN 19051-21:1991-03 Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers
• 1991 DIN 19051-21:1991 Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers