Khrenov K., Yarkho V. Arc welding technology. In Russian (ask us if in doubt)/Khrenov K., Yarkho V. Tekhnologiya dugovoy elektrosvarki. Approved by the All-Union Committee for Higher School Affairs under the Soviet People's Congress of the USSR as a textbook for machine-building tubes of Mashgiz 1940. 408 p. SKUalb815174c7cc969e22.