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RT @isomorphisms: Max Dehn. Über den Rauminhalt. Karlsruhe, 1901. 13pp. https://t.co/USLQKFEaxA Solved Hilbert's 3rd problem.
RT @isomorphisms: Max Dehn. Über den Rauminhalt. Karlsruhe, 1901. 13pp. https://t.co/USLQKFEaxA Solved Hilbert's 3rd problem.
Max Dehn. Über den Rauminhalt. Karlsruhe, 1901. 13pp. https://t.co/USLQKFEaxA Solved Hilbert's 3rd problem.