2: The alterations to the first edition (1820) of T. R. Malthus, "Principles of political economy", in Malthusʼ manuscript revisions and in the second edition (1836)
2: The alterations to the first edition (1820) of T. R. Malthus, "Principles of political economy", in Malthusʼ manuscript revisions and in the second edition (1836)
2: The alterations to the first edition (1820) of T. R. Malthus, "Principles of political economy", in Malthusʼ manuscript revisions and in the second edition (1836)
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