Master This! Wastewater Treatment Facility Technician Exam Textbook Available for immediate purchase. This textbook was obtained at the May 2024 training session, the last one held at the venue. The training cost around 120,000 yen and involved a week of intensive study. As shown in the images, the instructor's key points are underlined. I didn't doze off and have noted all the instructor's important points, so I think it will be very helpful. I passed the Wastewater Treatment Facility Technician exam in 2024 using this textbook. I think it's a good book. This is a one-of-a-kind item, so it's first come, first served. I will ship it promptly after purchase, so thank you. #WastewaterTreatmentFacilityTechnician #ShinryoYamada #Shinryo_Yamada #YojiUchiya #Yoji_Uchiya #AkinoriOkumura #Akinori_Okumura #Book #CivilEngineering/Architecture b500