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Mirae in'gu wigi
Hang-ŭn Yi, Kang-uk Yi, Ŭn-ju Sim, Hyo-jŏng Kim, Sŏng-su Son · Kukhoe Tosŏgwan
214 sayfa · 2011
Population / Statistics / Population policy / Family policy / Birth control
Chawŏn chŏnjaeng
Hang-ŭn Yi, Kang-uk Yi, Ŭn-ju Sim, Chŏng-a Pak, Sŏng-su Son · Kukhoe Tosŏgwan
159 sayfa · 2011
Nonrenewable natural resources / Raw materials / Economic aspects / Energy industries
Pi chŏnggyujik kŭlloja
Hang-ŭn Yi, Tae-yŏng Kim, Ŭn-ju Sim, Chŏng-a Pak, Sŏng-su Son · Kukhoe Tosŏgwan
136 sayfa · 2011
Temporary employment / Part-time employment / Manpower policy