Releases by Mark Devon

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Cover for Mark Devon · The Origin of Emotions (Paperback Book) (2015)

The Origin of Emotions (2015)

Cover for Mark Devon · Happiness Dissected: a Breakthrough Dissection of the Emotions Based on Each Emotion's Unique Biological Purpose. (Paperback Book) (2015)

Happiness Dissected: a Breakthro... (2015)

Cover for Mark Devon · The Origin of Emotions: Version 1.1 (Paperback Book) (2010)

The Origin of Emotions: Version 1.1 (2010)