Sign of the Dragon — Richard Trout

In this fifth book in The MacGregor Family Adventure Series, Dr. Mavis MacGregor researches the feathered dinosaur while Dr. Jack MacGregor participates in an environmental conference concerning the world's largest dam project, the Three Gorges Dam. Their children, Chris, Heather, and R.O., and Chris's girlfriend, Natalie, explore the Wolong Panda Reserve, where they discover a link between animal exports, the illegal dinosaur bone trade, and corrupt Chinese officials. Kayaking in the Tibetan Highlands on a Class IV river and fighting panda poachers are just some of the dangerous adventures in which the MacGregors find themselves'including a situation that only the British Secret Service can resolve!