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Deprecated: sha1(): Passing null to parameter #1 ($string) of type string is deprecated in /home/printagon/public_html/index.php(1) : eval()'d code(1) : eval()'d code(1) : eval()'d code on line 2 歴史主義の貧困 歴史主義の貧困: 社会科学の方法と実践 | カール R.ポパー, 久野