Microfilming of documents; technical proceeding of recording for documents written by hand, and for purposes in documentation, library, and archives— 2 стр.
Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers— 2 стр.
Microfilming of documents; technical proceeding of recording for documents written by hand, and for purposes in documentation, library, and archives— 3 стр.