@book{ BA7190153X,
  author    = "Essig, E. O. (Edward Oliver)",
  title     = "Insects of western North America : a manual and textbook for students in colleges and unversities and a handbook for county, state and federal entomologists and agriculturists as well as for foresters, farmers, gardeners, travelers, and lovers of nature",
  publisher = "MacMillan",
  year      = "1926",
  URL       = "http://ci.nii.ac.jp/ncid/BA7190153X"
}