Metzler Lexikon Literarischer Symbole
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Semiotics in Mathematics Education
Norma Presmeg & Luis Radford & Wolff-Michael Roth & Gert Kadunz
Encyclopedia of Christian Theology
Jean-Yves Lacoste
JIRA Agile Essentials
Patrick Li
Cultish
Amanda Montell
Basic Concepts of Ancient Philosophy
Martin Heidegger