History

Time	Change
2013-12-27 02:42:05+00:00	Associated with GB/T 1988-1998
2013-12-27 02:42:05+00:00	Associated with GB 1988-89
2013-12-27 02:42:05+00:00	Associated with GB 1988-80
2013-12-27 02:42:18+00:00	Associated with GB/T 1988
2013-12-27 02:42:18+00:00	Associated with GB1988
2013-12-27 02:42:38+00:00	Associated with GB Roman
2020-10-11 06:23:06+00:00	Associated with GB 7420
2020-10-11 08:03:20+00:00	Associated with GB 3909
2022-11-07 13:41:29+00:00	Associated with SJ 939-74
2022-11-07 13:41:29+00:00	Associated with SJ 939-1974
2022-11-07 13:41:32+00:00	Associated with SJ 939