Dlaczego pokrywy studzienek są okrągłe? [ENG]
Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there’s another, more compelling reason...
- #
- #
- #
- #
- 1
Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there’s another, more compelling reason...
Komentarze (1)
najlepsze