3 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 6417.21 Acoustic Measurement

  Acoustic Measurement is the disciplined determination of the sonic properties of a space, structure, or holding within the Tower, expressed …

• MS 5157.92 Kaelen
• MS 1313.33 Symmetry Audit

  Symmetry Audit is the formal, biennial procedure for verifying the precise balance between an archival entity and its designated inverse or …