4 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 6592.69 Administrative Systems
• MS 4467.03 Aperture Archive
• MS 1942.71 Fade Anomaly Assessment Registry
• MS 1834.08 Report on the Acoustic Properties of Floor 331

  Report on the Acoustic Properties of Floor 331 is the official designation for a seven-volume survey and its attendant annexes, compiled by …