@book{139549,
	author = {Helikh, A. O.},
	title = {Scientific - Research work},
	year = {2025},
	address = {Sumy},
	url = {https://newlibrary.snau.edu.ua/cgi-bin/koha/opac-retrieve-file.pl?id=f9815a527fca78969b768ed509529a26}
}