Without what type would printing books been difficult?

Printing books would have been incredibly difficult without paper.

Here's why:

* Durability: Paper is a strong and durable material that can withstand repeated handling and storage.

* Affordability: Paper is relatively inexpensive to produce, making books accessible to a wider audience.

* Versatility: Paper can be easily printed on, written on, and bound into books.

* Portability: Paper is lightweight and easy to transport, making books portable and readily available.

While other materials have been used for writing and printing throughout history (like clay tablets, papyrus, and parchment), paper revolutionized the production and dissemination of books.