History

Time	Change
2009-10-26 15:14:53+00:00	Created
2009-10-26 15:14:53+00:00	Associated with 科学
2016-08-09 08:12:36+00:00	Associated with 科学 (学研)
2017-06-23 05:52:07+00:00	Disassociated from 科学
2017-06-23 05:52:10+00:00	Associated with 科学