Underwriters Laboratories, Incorporated
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Report on Acoustical Material and Steel Framing Members in a Floor and Ceiling Construction. Keene Ceiling and Insulating Division of Keene Building Products Corporation, a Subsidiary of Keene Corporation, Princeton, New Jersey.
Underwriters Laboratories, Inc., Northbrook, IL
File R4647-14; File R6286,
May 10, 1971,
35 p.