Grass Snake Links
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http://www.ex.ac.uk/~cnfrench/ics/cbru/monitor/natnat.htm
http://www.ddgi.es/espais/iserpaig.htm
http://www.fotonatura.com/portfolio/jvarkel.htm
http://www.ringelnatter.net/english.htm
http://www.1freespace.com/mitjaderenda/Snakes/Natnat/index.htm http://www.bnhof.de/~rattau/natrix.htm
Books
Snakes and Lizards
Snakes of the World
Snakes – A Natural History
Mammals, Reptiles and
Amphibians of Britain and Europe
Tom Langton
Chris Mattison
Roland Bauchot
Paul Morrison
Whittet Books
Blandford
Sterling
Macmillan