The mountain vipers of the Middle East : the Vipera xanthina complex (Reptilia, Viperidae) /
Nilson, G.(Göran)
Andrén, C.(Claes)
Bonn : Zoologisches Forschungsinstitut und Museum Alexander Koenig,
1986.
Spine title: Vipera xanthina complex.
Bibliography: p. 86-90.
Vipera.
Reptiles