A manhole cover with a 22* symmetry type. You can see also a detail.
A manhole cover with a *442 symmetry type. You can see also a detail.
The coat-of-arms of the town of Pisa, in a man-hole cover, is an example of a rosette with...
A manhole cover with a 22* symmetry type. You can see also a detail.
A manhole cover with a *442 symmetry type. You can see also a detail.
The coat-of-arms of the town of Pisa, in a man-hole cover, is an example of a rosette with...
drains and manhole covers
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