https://publication.npru.ac.th/simple-search?query=&filter_field_1=has_content_in_original_bundle&filter_type_1=equals&filter_value_1=true&sort_by=score&order=desc&rpp=10&etal=0&start=10
NPRU - Online Journal and Research Databases: Search
online journalresearch databases
https://e-book.npru.ac.th/?act=MDEwMF9ib29rX2RldGFpbC5waHA=&bid=303&bcid=833
0100 - NPRU E-Book
ebook