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On the floor of the Gallery, in Milan, a rosette with a dihedral symmetry group, a D16 gro...
The clappers of this door in Rome on the Aventino have a dihedral symmetry D1 and if you l...
A rosette with dihedral symmetry of type D1, on the decoration of this part of the Fortres...
Ophrys olosericea, a plant characterized by a big flower, that belongs to the family of th...
Un'inferriata con una simmetria diedrale, di tipo D2, la stessa di un rettangolo.
Un rosone con simmetria diedrale di tipo D2 sulla facciata della chiesa di S. Lorenzo, a G...
A rosette with dihedral symmetry of type D2, among the decorations of a wall at palace Fel...
Unicellular alga covered in silica. The photo of this diatom seen under an optical microsc...
Section of the trunk of a Cyperacea sp. Photographed under an optic microscope. This herba...
Under the label of this house in Venice we can see some rosettes with dihedral symmetry of...
