共 50 条
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- [2] Geography by Grades BULLETIN OF THE AMERICAN GEOGRAPHICAL SOCIETY OF NEW YORK, 1913, 45 (03): : 220 - 220
- [8] MATHEMATICAL AND ANGELIC ASTRONOMY BRITISH JOURNAL FOR THE HISTORY OF SCIENCE, 1980, 13 (45): : 255 - 258
- [10] Mathematical Geography BULLETIN OF THE AMERICAN GEOGRAPHICAL SOCIETY OF NEW YORK, 1906, 38 (04): : 260 - 260