Andes Special: Inca Engineering/Quipus/Potatoes/Alpacas Newton's Apple : Season 14 Episode 6
PBS 30m
Aired: November 16th, 1996 @ 7:00 PM EST on PBS
Know what this is about? Be the first one to add a plot.
PBS 30m
Aired: November 16th, 1996 @ 7:00 PM EST on PBS
Know what this is about? Be the first one to add a plot.
