Underground City Systems - Ellen Rodger - Bog

"Underground City Systems uses cutaway illustrations to explore the worlds great sewer and water systems. Readers will be amazed by such startling facts as the fatberg causing problems in London, Englands sewer system, and toilet-swimming sewer rats that plague all sewage systems. Readers will also learn about other underground services and systems, including heating and cooling, power and cable, as well as underground farming"--Provided by publisher.