Title: No substitution for proper studying
Product review: I have taken the Wastewater Treatment Plant Operator exams for the I, II, and III in a state that uses the ABC exams. This book says it will help you, but it did not help me. Find other study material, this is of no help for the exams I have taken. Reading the excellent Ken Kerry books and doing the math at end of the books did it for me.
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