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Continue to Chat"Freedom Is Indivisible": Rudolf Hilferding's Correspondence with Karl Kautsky, Leon Trotsky, and Paul Hertz, 1902-1938 https://booksdeli.com/en-jp/products/freedom-is-indivisible-rudolf-hilferdings-correspondence-with-karl-kautsky-leon-trotsky-and-paul-hertz-1902-1938-9789004527379