7 ಸೀಸನ್
223 ಸಂಚಿಕೆ
3-2-1 Contact - Season 7 Episode 17
There is surprising strength in a tube because it is hollow. We see how tubes are used in bicycles, organs, and roofs.
- წელი: 1988
- ದೇಶ: United States of America
- ಪ್ರಕಾರ:
- ಸ್ಟುಡಿಯೋ: PBS
- ಕೀವರ್ಡ್:
- ನಿರ್ದೇಶಕ:
- ಪಾತ್ರವರ್ಗ: