Tim Johnson

Books
Beginner's Guide to Echolocation for the Blind and Visually Impaired: Learning to See With Your Ears Beginner's Guide to Echolocation for the Blind and Visually Impaired: Learning to See With Your Ears
Beginner's Guide to Echolocation for the Blind and Visually Impaired: Learning to See With Your Ears
2012
Beginner's Guide to Echolocation for the Blind and Visually Impaired Beginner's Guide to Echolocation for the Blind and Visually Impaired
Beginner's Guide to Echolocation for the Blind and Visually Impaired
2013