@article{271,
  keywords = {Ecology and Environment, Zoology},
  author = {Brereton Tom M. and Roy D. B. and Greatorex-Davies Nick},
  title = {Thirty years and counting: the contribution to conservation and ecology of butterfly-monitoring in the UK},
  year = {2006},
  journal = {British Wildlife},
  volume = {17},
  pages = {162-170},
  month = {2006},
  isbn = {0958-09556},
  url = {http://www.britishwildlife.com/index.html},
  language = {eng},
}