Payap University Journal
Vol. 28 No. 2 (2018)
Payap University Journal
Vol. 28 No. 1 (2018)
Payap University Journal
Vol. 27 No. 2 (2017)
Payap University Journal
Vol. 27 No. 1 (2017)
Payap University Journal
Vol. 26 No. 2 (2016)
Payap University Journal
Vol. 26 No. 1 (2016)
Payap University Journal
Vol. 25 No. 2 (2015)
Payap University Journal
Vol. 25 No. 1 (2015)
Payap University Journal
Vol. 24 No. 2 (2014)
