Iskanderov Tavakkul M. Republic of AzerbaijanBakuInstitute of Zoology of National Academy of Sciences of Azerbaijan, 504th block, 1128 passage, A. Abbaszadeh St., Baku 1073, Republic of Azerbaijantevek52m@gmail.com Author's articles Distribution and Conservation of the Nikolsky’s Pitviper, Gloydius caucasicus (Reptilia, Viperidae) in Azerbaijan