User talk:120.17.53.130

Welcome!
Hello, and welcome to Wikipedia! Thank you for your contributions, such as the one you made on PDF/A. I greatly appreciate your constructive edits on Wikipedia. I hope you like the place and decide to stay. Here are some pages you might like to see:
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Again, welcome!  Smart com 5  (Talk ?) 11:06, 15 June 2019 (UTC)