 | Mathematics - 1920
Series 1-2 contain Litterarischer Beruht, which is separately paged, and Mathematische und physikalische Bibliographie, which is without pagination. | |
 | Mathematics - 1918
Series 1-2 contain Litterarischer Beruht, which is separately paged, and Mathematische und physikalische Bibliographie, which is without pagination. | |
 | Mathematics - 1917
Series 1-2 contain Litterarischer Beruht, which is separately paged, and Mathematische und physikalische Bibliographie, which is without pagination. | |
 | Mathematics - 1917
Series 1-2 contain Litterarischer Beruht, which is separately paged, and Mathematische und physikalische Bibliographie, which is without pagination. | |
 | Mathematics - 1915
Series 1-2 contain Litterarischer Beruht, which is separately paged, and Mathematische und physikalische Bibliographie, which is without pagination. | |
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