Influences of changes in natural environments by natural hazards and human activities in ancient times in Korea on collapse of the Unified Silla Dynasty (자연재해와 인위적 환경변화가 통일신라 붕괴에 미친 영향)
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- Journal of the Korean association of regional geographers
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- v.19 no.4
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- pp.580-599
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- 2013