Related Clues:

• Big bites for bookworms
• Scholarly books
• Weighty reading?
• Weighty works
• Bibliophile's units
• Books with meat
• Books on stands, usually
• Page numbers
• They're not quick reads
• Ponderous books
• Large volumes
• Voluminous volumes
• Humongous books
• They take a while to read
• Book leaves