1920's / 1930's - The Rise of A/V (1 janv. 1920 – 31 déc. 1939)
Description:
This decade saw the rise of the radio and audio movement - which over the next two decades ultimately had little impact on facilitating instruction.Ajouté au bande de temps:
Date:
1 janv. 1920
31 déc. 1939
~ 20 years
