@article{322640,
      recid = {322640},
      author = {McCann, James,},
      title = {Maize and grace : Africa's encounter with a New World  crop, 1500-2000 /},
      publisher = {Harvard University Press,},
      address = {Cambridge, Mass. :},
      pages = {xiii, 289 p. :},
      year = {2005},
      url = {http://library.usi.edu/record/322640},
}