@article{3933762,
      url = {http://digitallibrary.un.org/record/3933762},
      title = {The state of food and agriculture., 1976,: Energy and  agriculture},
      publisher = {Food and Agriculture Organization of the United Nations,},
      recid = {3933762},
      pages = {ix, 157 p. :},
      address = {Rome :. 1977},
      year = {1977},
}