Items where Author is "Valcheva, Nedyalka"
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Article
Ignatov, Ignat and Valcheva, Nedyalka (2020) Microbiological and Physicochemical Research of Mountain Spring Waters in Vasiliovska Mountain, Municipality of Teteven, Bulgaria. Chemical Science International Journal, 29 (3). pp. 16-23. ISSN 2456-706X