Velasquez, Carlos. Advanced welding techniques / Carlos Velasquez. - New York : 3G E-Learning, LLC., ©2025. - xv, 254 pages : illustrations (some colors) ; 25 cm. Includes references and index. ISBN: 9781984696168 Subjects--Topical Terms: Welding. Dewey Class. No.: DC 671.52 V541 2025