↑
↓
:
pусский
English
Português
Deutsch
Dansk
Español
Français
Ελληνικά
Italiano
Nederlands
Polski
Português
Română
Srpski
Svenska
Türkçe
Mental Floss: Big Questions
Mental Floss: Big Questions
Why are blueprints blue? (2x6)
:
This week, David Lev asks, "Why are blueprints blue?"
#
:
: 79
: 0
YouTube
13