Poiji annŭn chonjae
Subtitle: Yun Han-jong sajinjip = Invisible beings
By: Yoon Hanjong
Edition: Ch'op'an
Publisher: Nunpit
Published: 2018
Place of publication: Sŏul-si
Language: kor
Number of pages: 135
ISBN-13: 9788974094775
Subjects: Electronic instruments; Pictorial works; Electronic apparatus and appliances
Other titles: Invisible beings
Notes: In Korean and English.