Detektorist - refleksvastuvõtjaniOlbrei, Fred1929 https://www.ester.ee/record=b1157469*est

Ehitusõpetus : käsiraamat majaehitajaileKlein, Aleksander1931 https://www.ester.ee/record=b1425684*est

Hydraulic formulae of two-layer exchange flow in an obstructedchannel with trapezoidalcross-sectionLaanearu, Janek; Cuthbertson, Alan6th IAHR Europe Congress, Warsaw, Poland : abstract book2021 / p. 245-246 https://iahr2020.pl/wp-content/uploads/2021/02/Book-of-Abstracts-15-02-2021.pdf

QBIArro, Hendrik2000 https://www.ester.ee/record=b4275041*est

VI Eesti raadionäitus : Börsisaalides 3. - 7. novembrini 19341934 https://www.ester.ee/record=b1481080*est