1.

2. 1. google.com 3. 2. . 4. 3. 5. 4. 6. OPAC (Online Public Access Catalog) / . VTLS 7. : VTLS 8. OPAC (Online Public Access Catalog) : (AUTHOR) (TITLE) (SUBJECT) (WORDS) (CALL NO) / (AUTHOR/TITLE) 9. WEB OPAC 10. http://library.lru.ac.th/web/opac/ 11. http://library.lru.ac.th/web/database/ 12. http://opac.lru.ac.th/ 13. (WEB OPAC) http://opac.lru.ac.th/ 14. WebOPAC ++ (AUTHOR) ++ (TITLE) ++ (SUBJECT) ++ (KEYWORD) ++ (CALL NUMBER) ++ / (AUTHORS/TITLE) 15. - (By Professor) - (By Course) 16. 17. 18. 19. 20. - - - - - - 21. 22. 23. http://www.thaiedresearch.org/thaied/ 24.