Author: Nilson, G. and C. Andrén
Title: The mountain vipers of the Middle East - The Vipera xanthina complex (Reptilia, Viperidae).
Description: Bonn, Zoologisch Furschungsinstitut und Museum Alexander Koenig, 1986. 8vo (24.0 x 16.4 cm). 90 pp., 33 text figures. Original printed softcover. = A well-illustrated work with photos of type species, living animals, and distribution maps. One new subspecies is recognized. This is Bonner Zoologische Monographien No. 20. Stamp and handwritten number on front wrapper. Otherwise a very good, clean copy.

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