Related Clues:

• It may need a big jacket
• Scholarly volume
• Heavy text
• 'Give it ___ straight'
• 'The way I see it …'
• Huge volume
• Thick reference book, e.g.
• Great volume
• Heavy volume
• Scholarly books
• Massive volume
• Large books
• A lot of volume?
• Weighty reading?
• Bulky book