Tiwari, Purushotham creator text New Delhi APH Publishing Corporation 2014 monographic viii,267p. Libraries Information storage and retrieval systems Automation 025.00285TIW 813131068X (hardcover) 9788131310687 (hardcover) http://www.amazon.com/exec/obidos/ASIN/813131068X/chopaconline-20 http://www.amazon.com/exec/obidos/ASIN/813131068X/chopaconline-20