@book{grottanelli1940,
  address = {Rome},
  author  = {Grottanelli, V. L.},
  key     = {Grottanelli (1940)},
  pages   = {1-397},
  series  = {Mission Etnografica nel Uallega Occidentale},
  title   = {I. Mao},
  volume  = {1},
  year    = {1940}
}