- Albert Einstein, The Human Side
- Albert Schweitzer
- Alchemy: Ancient and Modern - Being a Brief Account of the Alchemistic Doctrines, and their Relation...
- Alexander von Humboldt und die Erfindung der Natur
- Alfred Russel Wallace
- Alfred Russel Wallace: Letters and Reminiscences, Vol. 1
- Alfred Russel Wallace: Letters and Reminiscences, Vol. 2
- Alphabet Travelogue
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