Biographien; Biographies ; History of linguistics (20th century) ; Communication research ; Erkenntnistheorie und Semiotik; Epistemology and semiotics; Semiotics and epistemology ; Semiotik (Theorie) ; Semiotic theory; Theory (semiot.) ; Sign ; Icon ; Erkenntnistheorie und Pragmatismus; Epistemology and pragmatism; Pragmatism (epistemology) ; Plérémique; Sign (linguistic) ; Linguistic sign ; Taxonomic linguistics; Structuralism