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Vol. 4 No. 1 (2022): Vol.4 No.1 January-April 2022
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ISSN: 2697-486X (Online)
X in the last digit number was automatically generated by the International Standard Serial Number (ISSN)
calculating system by a computer of National Library of Thailand.
The result of the last digit number was equal to 10. Therefore, the last digit number
represented by X according to the given ISSN number of an eight-digit number.