Kothari,C R. Research methodology : methods and techniquues/ C R.Kothari : methods and techniquues/ - 3rd.ed. - New Delhi: New age international, 2014. - xx, 449p.; 24x18cm Includes appendix and index. ISBN: 978-81-224-3623 : Rs.275 Subjects--Topical Terms: APPLIED SCIENCE Dewey Class. No.: 607.32 / KOT-RES