Koguryŏ Kwanggaetʻo Wangnŭng pimun yŏnʼgu : Kwanggaetʻo Wangnŭng pimun ŭl tʻonghan Koguryŏsa /

by Yi, To-hak, 1957-, Yi, To-hak, 1957-, Yi, To-hak, 1957-
Published 2006

Saeropke haesŏk han Kwanggaet'o Wangnŭng pimun /

by Yi, To-hak, 1957-, Yi, To-hak, 1957-, Yi, To-hak, 1957-, Yi, To-hak, 1957-, Yi, To-hak, 1957-
Published 2020