Why?
Subtitle: kyogwasŏ chungsim : 4-hangnyŏn
By: kŭl Pak Chŏng-yŏng [and seven others]
Contributors: Han, Chong-ch'ŏn, illustrator; Hong, Kŏn-guk, author; Sweetspot, author; Ch'oe, Ik-kyu, illustrator; Nam, Ch'un-ja, author; Ch'oe, Pyŏng-guk, illustrator
Edition: 3-p'an
Publisher: Yerimdang
Published: 2015
Place of publication: Sŏul T'ŭkpyŏlsi
Language: kor
ISBN-13: 9788930236287; 9788930236102; 9788930236225; 9788930236164; 9788930236041
Subjects: Comic books, strips; Korean language; Study and teaching (Elementary); Mathematics; Social sciences; Science
Other titles: Kyogwasŏ chungsim
Table of contents: title: [1]. Kugŏ; title: [2]. Suhak; title: [3]. Sahoe; title: [4]. Kwahak; title: 880-05