Theory book for Denken (Electrical Engineer) Class 2, First Exam, Revised 2nd Edition. - Title: Kore Dake Riron Denken 2-shu Ichiji Shiken Kaitei 2-han (Just This Much Theory: Denken Class 2, First Exam, Revised 2nd Edition) - Publisher: Denkishoin (Electrical Publishing House) - Series: Kore Dake Series (Just This Much Series) - Edition: Revised 2nd Edition - ISBN: 978-4-8051-0055-4 *There are a few pages with writing in them. No cover. Thank you for looking.