Shvarts Evgeny A. RussiaMoscowConservation Policy of WWF-Russia, 19 Nikoloyamskaya Str., Moscow 109240, RussiaEShvarts@wwf.ru Author's articles EVOLUTIONARY AND ECOLOGICAL ASPECTS OF GENETIC VARIABILITY IN POPULATIONS OF SICISTA BETULINA (RODENTIA, DIPODOIDEA) FROM VALDAI HILLS