![Testing strength of glass panels. Washington, D.C., June 21. With glass blocks being used more and more these days in the construction [of] buildings, The National Bureau of Standards is conducting extensive tests to determine how much wind pressure the panels will stand. So far the panels have resi](https://thumbs.arkivism.com/loc-2016873730.jpg)
Public domain
Testing strength of glass panels. Washington, D.C., June 21. With glass blocks being used more and more these days in the construction [of] buildings, The National Bureau of Standards is conducting extensive tests to determine how much wind pressure the panels will stand. So far the panels have resi
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineTesting strength of glass panels. Washington, D.C., June 21. With glass blocks being used more and more these days in the construction [of] buildings, The National Bureau of Standards is conducting ex. 1938-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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