People talk a lot about germs, but what actually are they? Open the pages of this friendly book to find out. Discover what bacteria and viruses are, how they can spread and lots of different ways to stop them.
Express delivery and return policies
Free shipping on orders over $30
Processing time: 1-2 Days
Shipping time: 3-5 Days(According to the logistics method and delivery address)
Items can be returned or exchanged within 30 days !
