15 Season
195 Episode
Newton's Apple - Season 14 Episode 6 Inca Engineering; Quipus; Potatoes; Alpacas (1998)
- Country : United States of America
- Genre : Documentary, Family
- Studio : PBS
- Director :
- Cast : Su-chin Pak, David Heil, Dave Huddleston, Brian Hackney, Eileen Galindo