Bhatt R K Au. University libraries - Delhi Narendra Publishing House India 2019 - x,337p. cm. ISBN: 9789388668316 (hbk) INR 2495.00 Standard No.: 352,514 Source: 1820, 26/02/2020, Bright Book Service Textual Subjects--Topical Terms: LIBRARY SCIENCE Dewey Class. No.: 234, Q9