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5 lb. Book of GRE Practice Problems: 1,800+ Practice Problems in Book and Online (Manhattan Prep 5 lb Series)

Math Workout for the GRE, 4th Edition: 275+ Practice Questions with Detailed Answers and Explanations (Graduate School Test Preparation)

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500 Essential Words: GRE Vocabulary Flashcards (Manhattan Prep GRE Strategy Guides)

GRE Prep 2020 & 2021: GRE Study Book 2020-2021 & Practice Test Questions for the Graduate Record Examination [Includes Detailed Answer Explanations]

500 Advanced Words: GRE Vocabulary Flashcards (Manhattan Prep GRE Strategy Guides)