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book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help) Zug, George R. (2001). Herpetology:An Introductory Biology of Amphibians and Reptiles
ശ്രീലങ്കയിലെ ജൈവവ്യവസ്ഥ
Birds. Adam & Charles Black, London. Goin, Coleman J.; Goin, Olive B.; Zug, George R. (1978). Introduction to Herpetology, Third Edition. San Francisco: