9 الموسم
158 حلقة
MegaStructures - Season 3 Episode 12 الحلقة 12
It's man made and one of the strongest materials on earth. Explore the science behind steel and the innovations it has made possible -- from the Brooklyn Bridge to the tools for medical miracles.
- عام: 2012
- بلد: United States of America
- النوع: Documentary
- ستوديو: National Geographic
- الكلمة الرئيسية:
- مخرج:
- المصبوب: