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20 avr. 1999 - April 20: Most Deadliest School Shooting in US

Description:

Columbine HS students killed 15 & wounded 23 ppl -> stricter safety procedures, but school shootings freq. is alarming.

Ajouté au bande de temps:

1990s Timeline Part 2

ByJulie Berichon

8 mai 2019

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309

Date:

20 avr. 1999

Maintenaint

~ Il y a 26 ans

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