Nurul Islam, M. An introduction to research methods : a handbook for business and health research / M. Nurul Islam. - 5th ed. - Dhaka: Mullic & Brothers pub. c2023. - 674p: diagrs.; 21 cm. Includes Bibliography and Index. ISBN: 9843000014223 Subjects--Topical Terms: BusinessResearch Methods Dewey Class. No.: 001.42 / NUI