World PressEncyklopedia 2nd EditionWydawnictwo: Gale Group
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Encyklopedia of World BiographyWydawnictwo: Gale Group
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Telecommunications DirectoryWydawnictwo: Gale Group
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Acronyms, Initialisms & Abbreviations DictionaryWydawnictwo: Gale Group
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American Men & Women of ScienceWydawnictwo: Gale Group
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Contemporary Theater, Film & TelevisionWydawnictwo: Gale Group
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Dictionary of Literary SymbolsWydawnictwo: Gale Group
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Encyclopedia of Philosophy - 10 volsWydawnictwo: Gale Group
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Encyclopedia of School PsychologyWydawnictwo: Gale Group
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Encyclopedia of Social TheoryWydawnictwo: Gale Group
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