Han, Sŏng-nin. Kŭmsok chŏlsak kidaeyong chigu sŏlgye pʻyŏllam / [Han Sŏng-nin chŏ]. - Pʻyŏngyang : Kongŏp Chʻulpʻansa, 1966. - 440 p. : ill. ; 21 cm. LCCN: k 68000012 Subjects--Topical Terms: Machine-shop practice--Handbooks, manuals, etc. LC Class. No.: TJ1160. / H33