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Wydania przez Barbara Fredrickson

29 grudnia 2009 – 1 maja 2021

Cover for Barbara Fredrickson · Amor 2.0 (Paperback Book) (2021)

Amor 2.0 (2021)

Barbara Fredrickson

Cover for Barbara Fredrickson · Kærlighed (Paperback Book) [1. wydanie] [Paperback] (2013)

Kærlighed (2013)

Barbara Fredrickson

Cover for Barbara Fredrickson · Positivity: Groundbreaking Research to Release Your Inner Optimist and Thrive (Paperback Book) (2011)

Positivity: Groundbreaking Resea... (2011)

Barbara Fredrickson

Cover for Barbara Fredrickson · Positivity: Top-notch Research Reveals the 3 to 1 Ratio That Will Change Your Life (Paperback Book) (2009)

Positivity: Top-notch Research R... (2009)

Barbara Fredrickson