@article{HartmannGabrielZhouetal.2004,
  author    = {Lena Hartmann and Marvin Gabriel and Yuanrong Zhou and Barbara Sponholz and Heinrich Thiemeyer},
  title     = {Soil assessment along toposequences in rural northern Nigeria : a geomedical approach},
  journal   = {Applied and environmental soil science},
  volume    = {6},
  number    = {Art. 628024},
  pages     = {1 -- 9},
  doi       = {10.1155/2014/628024},
  year      = {2004},
}