@article{242252,
      author = {Mäkelä, Markku Juhani},
      url = {http://digitallibrary.un.org/record/242252},
      title = {National policies and technologies for phosphorus and  nitrogen removal from municipal wastewater in Finland /},
      publisher = {UN,},
      recid = {242252},
      pages = {8 p. :},
      address = {Geneva :. 1990-01-02},
      year = {1990},
      month = {Jan},
}