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1 ene 1972 año - Scantrons are invented
Descripción:
Every one's favorite test form is created with the purpose of being able to automatically grade multiple choice exams
Añadido al timeline:
Technology in Schools
By
Kris Lessinger
2 nov 2017
0
0
260
fecha:
1 ene 1972 año
Ahora mismo
~ 52 years ago
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