DIN 19059-2 Supplement 1
DIN 19059-2 Supplement 1 Microfilms; graphical symbols for microfilming; originals for practical application
Amendment by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/1985
Amendment by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/1985