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Journal Article The Soft Underbelly of Development: Demographic Transition in Conditions of Limited Economic Change Get access John C. Caldwell John C. Caldwell Search for other works by this author on: Oxford Academic Google Scholar The World Bank Economic Review, Volume 4, Issue suppl₁, December 1990, Pages 207–254, https: //doi. org/10. 1093/wber/4. suppl₁. 207 Published: 01 December 1990
John C. Caldwell (Mon,) studied this question.