Fire resistance of shutters for moving-stairway openings
By: Noland D. Mitchell, Edward D. Bender, and James V. Ryan
Contributors: Bender, Edward; Ryan, James V
Series: Building materials and structures report -- BMS 129
Publisher: G.P.O.
Published: 1952
Place of publication: Washington
Language: eng
Subjects: Staircases -- Fire testing; Doors -- Fire testing