NA 152

DIN Standards Committee Technical Fundamentals

DIN ISO 6428 ???din.label.webdb.content.articleState.CURRENT??? ???din.label.webdb.content.norm.quote.title???

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DIN 19051-20 1991-03 Test patterns for micrography; test exposures made to establish the conditions for microfilming of drawings ???din.label.webdb.content.norm.more??? 
DIN 19051-21 1991-03 Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers ???din.label.webdb.content.norm.more??? 
DIN 19053 1991-01 Microfilm aperture card for film 35 mm ???din.label.webdb.content.norm.more???