Bakiev Andrey G. RussiaTogliattiInstitute of Ecology of the Volga River Basin of RAS, Samara Federal Research Center of the Russian Academy of Sciences, 10 Komzina St., Togliatti 445003, Russiaherpetology@list.ru Author's articles Leukocyte blood composition of Naturix natrix (Serpentes: Colubridae) in the Mordovian State Nature Reserve (Russia) Comparative leukocyte blood profile of Emys orbicularis (Reptilia: Emydidae) from two populations Distribution of Phrynocephalus helioscopus (Pallas, 1771) (Agamidae, Reptilia) in the West Kazakhstan and Atyrau regions of the Republic of Kazakhstan Amphibians of the Orenburg State Nature Reserve (Russia) Distribution and protection state of Coronella austriaca (Reptilia: Serpentes: Colubridae) in Kazakhstan Age differences in the leukocyte blood composition of the common viper Vipera berus (Reptilia: Serpentes: Viperidae)