Posts Tagged ‘Discovery’
Hearing Aid
How to make hearing aid
Edited: September 2nd, 2010
How It’s Made (Season1 / Episode 4 / Part 1)
Discovery Channel: How It’s Made === 004 How It’s Made 1×04 (Hearing Aids, 3D Puzzles, Rubber Mats, Toilets)
Edited: May 20th, 2010