⚠️ As shown in the third photo, some question numbers have circles drawn next to them (in pencil). I only used it at the beginning of Chapter 1, and it's in relatively good condition since I didn't use it after that. "2022-2023 Edition Pollution Control Manager Exam: Water Quality Related: Strategy Problem Collection" Yasuhiko Miyoshi Price: ¥3200 #YasuhikoMiyoshi #book #engineering/industry/general