Tiwari, Purushotham. Digital library/ Purushotham Tiwari. - New Delhi: A P H Publishing Corporation, 2008 - viii, 285 p. ; 23 cm. Include index. ISBN: 8131300366 ; 9788131300367 Subjects--Topical Terms: Digital libraries. ; Libraries -- Automation. Dewey Class. No.: 25.04 / TID