초등 셈본. 4-1
Series: Uri ŭi kojŏn kwa yet kyogwasŏ 629-ch'aek yŏnginbon -- 4-chip; 4-chip
Publisher: Han'guk Haksul Chŏngbo
Published: 2020
Place of publication: Kyŏnggi
Language: kor
ISBN-13: 9788926893418
Other titles: Ch'odŭng sembon. 4-1