Gas metal arc welding : beginner : in compliance with NC I / 3G E-Learning. - 2nd ed. - - New York: 3G E-Learning. c2019. - vii, 346 p. : col. ill. ; 30 cm. Includes glossaries and index. ISBN: 978-1-98463-477-1 (pbk.) Subjects--Topical Terms: Welding. Gas welding. Arc welding.