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Beskrivelse
We can thank modern plumbing and sewage systems for the comfort and convenience of having water when and where we want it. Most importantly, we can thank them for indoor toilets. Clean, flowing water is something many of us take for granted until a pipe bursts, a drain clogs, or a storm drain overflows. This book helps readers learn how valuable plumbers and sewage workers are to our daily lives, even though we often don't see the work they do. Full-color photographs show students what goes on behind the scenes in these important jobs essential to modern civilization.