A set of easy-to-understand textbooks and problem sets for the Denken 3rd class theory, aimed at beginners. - Title: Denken 3rd Class Theory Textbook & Problem Set - Publisher: TAC Publishing - Edited by: Textbook Edition, Problem Set Edition - Series: 2nd Edition - Features: For beginners, easy-to-understand explanations - Price: Regular price 2,000 yen There are some notes written in the books. Please understand this before purchasing. Thank you for looking.