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You can buy my book Supercapacitors101 A Home Inventors Handbook at https://www.smashwords.com/books/view/306318 the money will help my research.
Date: November 24, 2020
You can buy my book Supercapacitors101 A Home Inventors Handbook at https://www.smashwords.com/books/view/306318 the money will help my research.