@book{ BA46135996,
  author    = "Panel on the Use of Nuclear Techniques for Studying Animal Protein Production from Non-Protein Nitrogen, Vienna, 1971 and Joint FAO/IAEA Division of Atomic Energy in Food and Agriculture",
  title     = "Tracer studies on non-protein nitrogen for ruminants : proceedings of a panel on the use of nuclear techniques for studying animal protein production from non-protein nitrogen",
  publisher = "International Atomic Energy Agency",
  year      = "1972",
  series    = "Panel proceedings series / International Atomic Energy Agency",
  number    = "",
  URL       = "http://ci.nii.ac.jp/ncid/BA46135996"
}