Double Torus · reference 19 of 432

Reference 19 — to paper 19

This is a reference only — the reverse fold of paper 19.

• Paper root — a0cf6115-31f4-8b53-bc2b-cbec46dd0709
• Reference root — 6c2b3a8a-7fa7-83cc-a9d2-6919b842ed4f

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