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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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19h 35min, jan 1, 1955 y - The categorical terms we use today are introduced by Sloan and Birch

Description:

Mild, Moderate, Severe, Profound

Added to timeline:

20 days ago
0
0
31
EDU 232 B Timeline Project
Fall 2018 Timeline Project. Emma Champion.

Date:

19h 35min, jan 1, 1955 y
Now
~ 63 years ago
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