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1
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2
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3by 김학전, 리순석, 장옥준 Hak-chŏn Kim, Sun-sŏk Yi, Ok-chun Chang“…Kwahak, Paekkwa Sajŏn Ch'ulp'ansa…”
Published 1983
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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17by 최완호, 문영호 Wan-ho Ch'oe, Yŏng-ho Mun“…과학, 백과사전출판사 Kwahak Paekkwa Sajŏn Ch'ulp'ansa…”
Published 1980
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18
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19by 최택선 T'aek-sŏn Ch'oe“…과학백과사전종합출판사 Kwahak Paekkwa Sajŏn Chonghap Ch'ulp'ansa…”
Published 1991
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20