Bhalla, Ranjit Kaur . Advanced research methodology / by Ranjit Kaur Bhalla and Mohit Puri. - New Delhi : Kanishka Publishers, Distributors , 2013 - 2 vols : ISBN: 978-81-8457-446-3 Subjects--Topical Terms: Scientific methods- Educational researchers Dewey Class. No.: T:f / Q3.2