Dòng Nội dung
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Mystery in the cave. Gertrude Chandler Warner ; illustrated by Charles Tang. 50 /
New York : Scholastic INC., 1996.
121 p. : ill. ; 21 cm.

While exploring the caves around Dragon s Mouth Cavern, a series of unusual and somewhat frightening events convinces the Alden children that someone does not want them around.