She is remembered for her contributions to improving the library's catalogues by means of systematic alphabetic sorting and by introducing new library services on the basis of study trips to libraries in Kharkiv, Poltava and Odessa and her active participation at the 1921 Russian Librarians Congress in St Petersburg.

[2][3] In 1889, at her initiative the Librarians’ Congress was organized, which contributed to the improvement of systematic catalogs, to the organization of the unique catalog of magazines and to the better service providing to children.

[4] In 1911, she participated at the Congress of Librarians of Russia held in St. Petersburg, where presented the report on the Library of Chișinău, brought suggestions to improve the library activity and exchanged experience with counterparts from other gubernia.

[4] In over 30 years of running the City Public Library, Harjevschi directed librarians to make more effort and dedication to readers' assistance, encouraged poor children's access to library halls, organized questionnaires among visitors to receive their feedback and other activities.

She kept close ties with renowned librarians of the Russian Empire, such as L. Nemoleațki, O. Nikolski, M. Globa, and others.