របៀបដាក់ក្បាលទំព័រ និងជើងទំព័រនៅក្នុងកម្មវិធី Excel 2019 (ភាគទី០២)​, Header and footer in Excel 2019

របៀបដាក់ក្បាលទំព័រ និងជើងទំព័រនៅក្នុងកម្មវិធី Excel 2019 (ភាគទី០២)​, Header and footer in Excel 2019
in video teach about insert header and footer in Excel 2019
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