Khlyap L. A. RussiaMoscowA. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninsky Prospect, Moscow 119071, Russiakhlyap@mail.ru Author's articles ON THE SPECIFIC COMPOSITION, DISTRIBUTION AND ECOLOGY OF VOLES (MAMMALIA, CRICETIDAE, MICROTINA) IN THE NORTH-WESTERN CAUCASUS