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- Year: 2002
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- Year: 2017
![book Some evidences of technological unemployment in Ancient Athens and Rome [master thesis]](/covers/files_170/1637000/5bca1e056ba793777312a755afee7466-g.jpg)
- Author: John Douglas Forbes
- Language: English
- Year: 1932
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- Year: 2014
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- Year: 2003
Bacteriophages
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- Author: John Douglas M.Sc. Ph.D. D.I.C. M.I.Biol (auth.)
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- Year: 1975
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- Year: 2007