- Author: Albert Einstein Leopold Infeld
- Language: Portuguese
- Year: 1988
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- Author: Albert Einstein Leopold Infeld
- Language: Romanian
- Year: 1957
- Author: Albert Einstein Leopold Infeld
- Language: Spanish
- Year: 1986
- Author: Albert Einstein Leopold Infeld Ευτύχης Μπιτσάκης (Μετάφραση - Συμπλήρωμα)
- Language: Greek
- Year: 1978
- Author: Albert Einstein, Leopold Infeld
- Language: Romanian
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- Author: Leopold Infeld
- Language: Spanish
- Year: 1978
- Author: Donna Infeld Audrey K Gordon Bernice C Harper
- Language: English
- Year: 1995