NEN 11118-1994 Helical-scan video type cassette system using 12 65 mm (0 5 in) magnetic tape Type M2 (IEC 1118 1993)《IEC 1118-1993 用12 65mm（0 5 in）磁带的螺旋扫描盒式磁带录像系统　M2型》.pdf

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