Book and Quill
minecraft:writable_book
Obtained by crafting. Doesn't stack.
How to get it
Crafting (shapeless) 
→
Book and Quill
Villagers buy this
Librarian · Expert 2 → 
1 Emerald +30 XP
2 1 Emerald +30 XP minecraft:writable_book
Obtained by crafting. Doesn't stack.
Book and Quill
2 1 Emerald +30 XP