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Synonyms for Karl Popper. (2017). Retrieved 2026, August 02, from https://thesaurus.plus/synonyms/karl_popper
Synonyms for Karl Popper. N.p., 2017. Web. 02 Aug. 2026. <https://thesaurus.plus/synonyms/karl_popper>.
Synonyms for Karl Popper. 2017. Accessed August 02, 2026. https://thesaurus.plus/synonyms/karl_popper.