Books by مارتن سليجمان

مارتن سليجمان
مارتن سليجمان
Average rating 3.64 · 81 ratings · 17 reviews · shelved 704 times


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تعلم التفاؤل: كيف تستطيع أن...

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3.96 avg rating — 20,732 ratings — published 1990 — 85 editions
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السعادة الحقيقية : استخدام ...

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3.92 avg rating — 12,535 ratings — published 2002 — 79 editions
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ما الذي يمكنك تغييره

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3.50 avg rating — 4 ratings
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