Submitted on: 14 May 2002.
Revised on: 06 August 2002.
Accepted on: 02 October 2002.
___________________Evidence Based Library and Information Practice
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Submitted on: 11 September 2013.
Revised on: 08 November 2013.
Accepted on: 24 December 2013.
___________________Evidence Based Library and Information Practice
Submitted on: 21 August 2016.
Revised on: 11 September 2016.
Accepted on: 03 November 2016.
___________________Evidence Based Library and Information Practice
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Submitted on: 20 November 2008.
Revised on: 01 January 2009.
Accepted on: 03 February 2009.
___________________Evidence Based Library and Information Practice