Djvu Popov L.n Laboratornye Ispytaniia Stroitelnykh Materialov M.: Vysshaia Shkola 1984 168 S -

An open-source alternative available for Mac and Linux.

This public archive often hosts scanned versions of "Vysshaya Shkola" publications from the 1980s. Tips for Viewing An open-source alternative available for Mac and Linux

This is one of the most reliable sources for Soviet-era technical textbooks. You can search for the specific 1984 edition in their Building Materials section. Note that a free registration is usually required to download. An open-source alternative available for Mac and Linux

You can find the DJVU file for (1984) by L.N. Popov through several specialized digital libraries and technical archives. This 168-page manual is a standard reference for construction material testing procedures. Where to Find the DJVU File An open-source alternative available for Mac and Linux

Similar to Libgen, searching for the ISBN or title in Russian often yields the 1984 "Vysshaya Shkola" edition.