10622/ORZCQV Didenko, Didenkovan Leeuwen, BasFoldvari, Peter IISH Data Collection 2023 Average years of education, cost based human capital per capita, income based human capital, books per capita, and literacy in former Soviet Union areas (1920 – 2010). Please cite as: *Didenko, D., van Leeuwen, B. & Foldvari, P. (2013). The spread of human capital in the former Sovjet Union areas in a comparative perspective:Exploring a new dataset. Journal of Eurasian Studies, 4 (2), pp. 123-135. * Van Leeuwen, B., Didenko, D., & Foldvari, P. (2015). Inspiration vs. Perspiration in Economic Development of the Former Soviet Union and China (ca. 1920–2010). economics of transition, 23(1), 213-246. van Leeuwen, Bas