| 1 |
A source book in animal biology / by Thomas S. Hall
1st ed.. - New York : McGraw-Hill , 1951
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| 2 |
From Frege to Gödel : a source book in mathematical logic, 1879-1931 / [compiled by] Jean van Heijenoort
: pbk,: cloth. - Cambridge, Mass. : Harvard University Press , 1967
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| 3 |
A source book in mathematics, 1200-1800 / edited by D.J. Struik
Cambridge, Mass. : Harvard University Press , 1969
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