Thank you for viewing this item. I received this item previously, but I only looked at the preface and afterword and haven't read the main text. I'm selling it because it's a waste. This book clearly depicts the realities of sewage systems, aiming to inform many people, including young engineers, students, and citizens who are interested in the field. Title: "Combined Sewer Systems and Siphons" Author: Hiroshi Suzuki, Doctor of Engineering Publisher: Public Investment Journal Co. Date of Publication: December 15, 2003 Price: 1,714 yen (excluding tax) Content: This book introduces a special facility called a siphon (fusekoshi) and aims to inform as many people as possible about the challenges that were once only known to some sewage system professionals. The item has been handled by people. Please refrain from purchasing if you are concerned. We do not accept complaints or returns after purchase. Thank you for your understanding. #sewerage #gesuido #gesui #combinedsewer #fusekoshi #fusekoshi