Prirodoochrannaja dejatelʹnostʹ Very Aleksandrovny Varsanofʹevoj = The environmental activity of V.A. Varsanofieva - Brovina, Aleksandra Aleksandrovna 1972-; Valʹkova, Olʹga Aleksandrovna ca. 20./21. Jh (FIC Komi NC UrO RAN, 2021)