COVID-19 Measures Handmade mask Book

The COVID-19 infection that started in Wuhan, China, is a major threat all over the world. And recently, I'm worried about a serious lack of masks. Therefore, this book introduces how to make an emergency mask that you can make yourself (with download of pattern PDF data)!

In addition, "how to improve immunity that can not be defeated by the COVID-19", "what you definitely want to remember to prevent infection", "what you should do when infected", "basic knowledge of the COVID-19", etc. Only the information you want to keep! We need to know it because we have not yet found an effective vaccine or effective therapy!