Sethi, G. S. Welder : Trade Theory with Assignment/Test - Solved / - 5th ed. - New Delhi : Asian Publishers, 2011 - Various pagination : ill. ; 28 cm. ISBN: 9788173175251 Rs. 150.00 Subjects--Topical Terms: Welding--TextbooksWelding--Equipment and supplies Dewey Class. No.: 671.52 / Se75