Roy Choudhury, Amiya Kumar Elements of workshop technology : machine tools / by Roy Choudhury and Nirjhar Roy. - 15th ed. (rev.) - Calcutta, Oxford Book Co. [1962?] - vol. II ; xiv, 708 p. : ill. ; 22 cm. Includes bibliographical references and index. ISBN: 8185099154 Subjects--Topical Terms: Metal-work--Handbooks, manuals, etc. Dewey Class. No.: 621.7 / CHO/E