Thomas, Rob <br/><br/>
Green thumb / 
by Rob Thomas. 
 - New York :  Simon & Schuster Books for Young Readers,  1999. 
 - 186p 
<br/><br/> Summary: While spending the summer in the Amazon rain forest of Brazil doing botanical research, thirteen-year-old Grady discovers a secret language used by the trees to communicate with each other and falls afoul of the dictatorial Dr. Carter, whose motives seem questionable. 
<br/><br/><label>ISBN: </label>0-689-81780-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rain forests--Fiction<br/>Brazil--Fiction<br/>Environmental protection--Fiction<br/>Indians of South America--Brazil--Fiction