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[Agora Image] 1997.09.0350 (Section Θ 259)

Plan, section, and elevation of the Tile Standard ... G. P. Stevens ... PD 1747 ... 1949

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[Agora Image] 2012.35.0896 (Section Θ 259)

Plan, section, and elevation of the Tile Standard ... G. P. Stevens ... PD 1747 AMS Horizontal (normal) ... 1949