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出版Simon & Schuster, Limited, 2000-10-02
主題Juvenile Fiction / Action & Adventure / General
ISBN07434040929780743404099
URLhttp://books.google.com.hk/books?id=fLVAAgAACAAJ&hl=&source=gbs_api
註釋Something strange is happening to the city's water supply and it is up to Arnold and Gerald to get to the bottom of it. But when they descend to the dark depths of the sewer system and see the Sewer King, an even bigger mystery unfolds. Will Arnold and Gerald be able to save the city's water supply before it's too late? Find out in this gripping adventure!