An edition of Tri-lok open steel flooring, concrete armoring, safety steps, T-Tri-lok (1920)
Tri-lok open steel flooring, concrete armoring, safety steps, T-Tri-lok
manufactured by the Tri-lok Company, Pittsburgh, Pa. : Dravo-Doyle Company, Pittsburgh, national distributors
By Tri-lok Company
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Publish Date
1920
Publisher
Tri-lok Company?
Language
eng
Pages
20
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