in 1798 thomas robert malthus published an essay on the principle of population

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1. An Essay on the Principle of Population

   

2. An Essay on the Principle of Population (1798). By: Thomas Malthus

   

3. An Essay on the Principle of Population (1798). by: Thomas Malthus

   

4. An Essay on the Principle of Population

   

5. Essay on the Principle of Population, Thomas Malthus, 1798

   

6. Thomas Malthus 1798 published Essay on the Principle of Population