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Copyright © 2014 Narongwas Boonma. All Rights Reserved.
Nakhon Pathom Rajabhat University 85 Malaiman Road, Muang, Nakhon Pathom 73000 Thailand
Tel : +663426-1067 Fax : +663426-1066 E-mail : narongwas2515@gmail.com; nb@npru.ac.th www.npru.ac.th