Kothari, C R Research Methodology. : Methods And Techniques / By C R Kothari . - 2nd Rev Ed. Rep. - New delhi: New Age International ( P)Limited Publishers, 2009. - Xvi,401p.: 35cm. Appendix & Index. ISBN: 9788122415223 Subjects--Index Terms: General management, Zoology Dewey Class. No.: 658.57