IEC 60857:1986/AMD2:1997

Amendment 2 - Pre-recorded optical reflective videodisk system 'Laser vision' 60Hz/525 lines - M/NTSC

IEC 60857:1986/AMD1:1991

Amendment 1 - Pre-recorded optical reflective videodisk system 'Laser vision' 60Hz/525 lines - M/NTSC

IEC 60857:1986

Pre-recorded optical reflective videodisk system 'Laser vision' 60Hz/525 lines - M/NTSC