v. 1. Research methodology in commerce -- v. 2. Research methodology in management -- v. 3. Research methodology in library science -- v. 4.Research methodology in political science -- v. 5.Research methodology in sociology -- v. 6. Research methodology in economics -- v. 7. Research methodology in education -- v. 8.Research methodology in geography -- v. 9. Research methodology in history -- v. 10. Research methodology in psychology.