Auffenberg W, Hafeezur R. Studies on Pakistan Reptiles Pt. 1. The Genus Echis (Viperidae). FLMNH [Internet]. 1991 Mar. 20 [cited 2026 May 7];35(5):263-314. Available from: https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol35-no5