Gray Versus Malthus; The Principles of Population and Production Investigated, and the Questions Does Population Regulate Subsistence, or Subsistence Population Has the Latter, in Its Increase, a Tendency to Augment or Diminish the Average Quantum of Emplo
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Gray Versus Malthus; The Principles of Population and Production Investigated, and the Questions Does Population Regulate Subsistence, or Subsistence Population Has the Latter, in Its Increase, a Tendency to Augment or Diminish the Average Quantum of Emplo
