User talk:49.230.83.75

December 2018
Hello, I'm John of Reading. I wanted to let you know that one or more of your recent contributions to Radio-frequency identification have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Thanks. John of Reading (talk) 13:30, 8 December 2018 (UTC)
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