ruiard: Lothar Baumgarten - Tetrahedron10 kg cobalt pigment stacked, 33 x 33 x 33 cm, 1968

ruiard: Lothar Baumgarten - Tetrahedron10 kg cobalt pigment stacked, 33 x 33 x 33 cm, 1968

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from: https://clifflumen.tumblr.com/post/161165537190