Youtube activity of "ostrov" (@ostrov11) on "VoicePower" channel.

Commenter youtube id

UCvol_cPGmW9pi4z6wdJzPhg
User comments on "VoicePower" channel

1
Commenter name

ostrov
Commenter name id

@ostrov11
Comments by video

"Vsauce: брахистохрона"