The Manhattan Prep 5 lb Book of GRE Practice Problems is a comprehensive study aid designed to help students prepare for the Graduate Record Examination. Published by Manhattan Prep Publishing, this textbook offers detailed practice problems and insights to help students excel in their studies. With a convenient trade paperback format and a thickness of 5 lbs, this book is a valuable resource for anyone looking to improve their performance on the GRE. The book covers various subjects related to graduate school guides and study guides, making it a must-have for students seeking to enhance their test-taking skills.