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	1.		How to Measure Survey Reliability and Validity by Litwin, Mark S Publication details: New Delhi; Sage, 1995 Availability: Items available for loan: Maharagama (1)Call number: 300.723 LIT. Place hold Add to cart (remove)
	2.		How to Assess and Interpret Survey Psychometrics by Litwin, Mark S Edition: 2nd Ed.; Publication details: New Delhi : Sage publication, 2003 Availability: Items available for loan: Maharagama (1)Call number: 300.723 LIT. Place hold Add to cart (remove)