"The relevant equation is: Knowledge = power = energy = matter = mass; a good bookshop is just a genteel Black Hole that knows how to read.” - Terry Pratchett

• Paper thickness: 10.3 mil
• Paper weight: 189 g/m²
• Opacity: 94%
• ISO brightness: 104%
• Paper is sourced from Japan

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!