Titlebook: Quantum-Mechanical Ab-initio Calculation of the Properties of Crystalline Materials; Cesare Pisani Book 1996 Springer-Verlag Berlin Heidel

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Cesare Pisaniwith the economic transition and economic development, the number of self-employed workers (“.”) in urban regions increased greatly, and the labor market is segmented by the informal sector and formal sector which seems to be similar with the developed countries and other developing countries. Why i