Source:
https://www.spreaker.com/user/7791612/in-teoria-il-vaccino-e-un-buon-sistema
Altri video su www.italy13.com
Documentazione Covid-19: https://bit.ly/ebook_COVID-19
Documentazione Vaccino: https://www.corvelva.it/speciale-corvelva/corvelva-ebook.html
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https://www.youtube.com/watch?v=XbLnQ5OjHs4