Double Torus · reference 423 of 432

Reference 423 — to paper 423

This is a reference only — the reverse fold of paper 423.

• Paper root — 38281c54-0deb-8731-ac0f-48c5c19e8b82
• Reference root — 1406083b-238d-8c69-9105-5994c6b6b39e

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