Islam, M. Nurul. An introduction to research methods / M. Nurul Islam. - 5th ed. - Dhaka: Mullick and Brothers, c2023. - 674p.: ill.; 21 cm. Includes index. Dept. of Economics. ISBN: 9843000014223 Subjects--Topical Terms: An introduction to research methods. Dewey Class. No.: 001.42 / ISI