@article{688794,
      author = {Zhang, Wen-Jun.},
      url = {http://library.usi.edu/record/688794},
      title = {Grasslands types, biodiversity and impacts / [electronic  resource] :},
      publisher = {Nova Science Publishers,},
      recid = {688794},
      pages = {xxix, 155 p. :},
      address = {Hauppauge, N.Y. :},
      year = {2012},
}