User talk:2402:4000:2181:44C7:D503:FD40:6809:FCCA

June 2020
Hello, I'm Blablubbs. I wanted to let you know that one or more of your recent contributions to Production–possibility frontier 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 Teahouse. Thanks. Blablubbs (talk) 09:29, 12 June 2020 (UTC)
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