A clapper

A dihedral symmetry of type D1 in this clapper in Val Brembana in Bergamo.From the point o...

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A clapper

Spiral decorations on a clapper in Val Brembana, Bergamo.

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A clapper

A dihedral symmetry of type D1 in these clappers in Val Brembana, Bergamo.

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A clapper

A dihedral symmetry of type D1 in this clapper in Milan.From the point of view of topology...

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A clapper

A dihedral symmetry of type D1 in this clapper in Venice.

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A clapper

A dihedral symmetry of type D1 in this clapper in Bergamo.From the point of view of topolo...

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Forme

Accostamento di rettilineo e curvilineo nella chiesa di S. Sara patrona degli zingari, a S...

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A group of fishes C2

Under the cornice of the palace of the University of Milan, in via Festa del Perdono), thi...

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A decoration **

Under the balcony of a house in piazza Argentina, in Milan, we can see a decoration of typ...

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