@article{34874,
      author       = "Takasaki, Masayoshi and ICA - 6 th International Conference
                      on Cartography, Montreal and Ottawa, Canada, August 16 - 25,
                      1972. I - Urban Cartography",
      title        = "Urban Function Map of Sapporo  ",
      year         = "1972",
      note         = "1 seš.",
}