2 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 6522.32 Cadres
• MS 3544.93 Spiral Staircase of Presumed Symmetry

  The Spiral Staircase of Presumed Symmetry (designated Spiral 77-Gamma in post-Schism cartography) is a primary architectural and conceptual …