Cite
MLA Citation
James Propp. “Prof. Engel's Marvelously Improbable Machines.” Math horizons, vol. 26, no. 2, 2018, pp. 5–9. http://access.bl.uk/ark:/81055/vdc_100072618138.0x000033
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James Propp. “Prof. Engel's Marvelously Improbable Machines.” Math horizons, vol. 26, no. 2, 2018, pp. 5–9. http://access.bl.uk/ark:/81055/vdc_100072618138.0x000033