Author:Paul de Kruif
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American microbiologist 
one or more editions are available in a spoken word format.
Works
- Our Medicine Men (1922) (external scan)
- Microbe Hunters (1926) (transcription project)
- Hunger Fighters (1928) (external scan)
- Seven Iron Men (1929) (external scan)
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1930.
This author died in 1971, so works by this author are in the public domain in countries and areas where the copyright term is the author's life plus 53 years or less. These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.
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