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Calculus equations, algebra, organic chemistry, chemical reactions, chemical elements, physics, rectilinear motion, statics, electromagnetism, friction force, energy, with black chalkboard background
The road, an Iceland landscape
Metal structure. Rectilinear reticulation. Grille for ventilation to the outside.
Beige ceramic mosaic wall with small square tiles and dark skirting.
Handcrafted wooden table with a dark border and natural sunlight casting shadows on the surface.

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