TY - BOOK AU - Chŏn,Tae-yŏl TI - Kigye palmyŏng ŭi ssak AV - TJ147 .C5 PY - 1960/// CY - Pʻyŏngyang PB - Adong Tosŏ Chʻulpʻansa KW - Machinery KW - Juvenile literature ER -