Hŭksaek saamnyu (chosŏk) sŏkchae chawŏn chosa yŏnʼgu =
Subtitle: The geology and deposits of black sandstone resources in the Boryong Area.
Contributors: Hanʼguk Tongnyŏk Chawŏn Yŏnʼguso.
Series: Yŏnʼgu pogosŏ -- KR-87-23; Yŏnʼgu pogosŏ (Hanʼguk Tongnyŏk Chawŏn Yŏnʼguso) -- KR-87-23.
Publisher: Hanʼguk Tongnyŏk Chawŏn Yŏnʼguso
Published: 1988
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 107
Other titles: Geology and deposits of black sandstone resources in the Boryong Area