@book{ BB18270629,
  author    = "Horne, W. T. (William Titus) and Essig, E. O. (Edward Oliver)",
  title     = "Plant disease and pest control",
  publisher = "University of California, College of Agriculture, Agricultural Experiment Station",
  year      = "1921",
  series    = "Circular / College of Agriculture, Agricultural Experiment Station, University of California",
  number    = "no. 227",
  URL       = "http://ci.nii.ac.jp/ncid/BB18270629"
}