@book{ BB14094080,
  author    = "Clarke, S. H. and Great Britain. Dept. of Scientific and Industrial Research",
  title     = "Gurjun, apitong, keruing, kapur and allied timbers",
  publisher = "H.M.S.O.",
  year      = "1937",
  series    = "Forest products research records",
  number    = "no. 16 . Timber series ; no. 5",
  URL       = "https://ci.nii.ac.jp/ncid/BB14094080"
}