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BIR extends validity of expired official receipts, sales invoices
發表在 Manila Bulletin (2022)Article -
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Charging for mobile all-IP telecommunications
出版 2008Available for University of the Philippines Diliman College of Engineering via IEEE Xplore. Click here to access
Also available remotely for University of the Philippines Diliman College of Engineering via IEEE Xplore. Click here to access thru EZproxy
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