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Colletti, Lucio
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Wolff, Philippe
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Lefebvre, Georges <1874-1959>
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Mandel, Ernest
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Meek, Ronald L.
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Kautsky, Karl
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Abosch, Heinz
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Borowski, Ludwig Ernst
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Pala, Alberto <1923-2005>
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Chesneaux, Jean
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Vogt, Joseph
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Beasley, W. G.
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Kemp, Tom
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Sofri, Gianni
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Nikolaevskij, Boris Ivanovič
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