Choudhary, S. K. Hajra. Elements of workshop technology vol. i : manufacturing processes / S. K. Choudhary, A. K. Hajra Choudhary, Nirjhar Roy. - 11th ed. - India : Media Promoters, 2011. - xiv, 653p.:illus. Includes index. ISBN: 8185099146 Subjects--Topical Terms: Workshop technology. Dewey Class. No.: 621.8 C552e 1997 V-1