. . . . . . . . "VIAF" . . . . . "0000000119440602" . . . . . . "Institute of mathematical geography. Ann Arbor, Mich."@fr . . . . "2013-07-26"^^ . . . . . "12316504"^^ . . . . "MICMG discussion papers, 1986. - . - LCNA, 1993-03. - . -"@fr . . . . "2013-07-26" . . "1993-06-23" . . . "Image"@fr . . "Institute of mathematical geography. Ann Arbor, Mich."@fr .