Halajian A, Eslami A, Mobedi I, Amin O, Mariaux J, Mansoori J, Tavakol S. Gastrointestinal Helminths of Magpies (Pica pica), Rooks (Corvus frugilegus) and Carrion Crows (Corvus corone) in Mazandaran Province, North of Iran. Iran J Parasitol. 1;6(2):38-44.