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 0 1990 Chinese census  1970-01-01

 0 1990s in mathematics  1970-01-01

 0 1990s internet outages  1970-01-01

 0 1991 Bangladeshi census  1970-01-01

 0 1992 Bulgarian census  1970-01-01

 0 1993 in robotics  1970-01-01

 0 1993 North Korean missile test  1970-01-01

 0 1994 Dronka floods and lightning strike  1970-01-01

 0 1998 bombing of Iraq  1970-01-01

 0 1999 Blayais Nuclear Power Plant flood  1970-01-01

 0 19th-century astronomical events  1970-01-01

 0 19th-century Chilean mathematicians  1970-01-01

 0 19th-century Colombian mathematicians  1970-01-01

 0 19th-century Finnish mathematicians  1970-01-01

 0 19th century in mathematics  1970-01-01

 0 19th-century Italian physicists  1970-01-01

 0 19th-century mathematicians by nationality  1970-01-01

 0 20/20 (spreadsheet software)  1970-01-01

 0 19th-century Norwegian mathematicians  1970-01-01

 0 19th-century Romanian mathematicians  1970-01-01