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Das, I.; Silva, A. de
2005
A photographic guide to snakes and other reptiles of Sri Lanka. 1st ed.
New Holland, London, etc. 144 pp.









Later editions:



 Das, I.; Silva, A. de
2010
A Photographic Guide to Snakes and other Reptiles of Sri Lanka. 2nd ed.
New Holland Publishers, London. 144 pp.