Hill, Julia Butterfly, One makes the difference: inspiring actions that change our world / Julia Butterfly Hill, Jessica Hurley. - New York, NY: HarperSanFrancisco, 2002. - x, 198 pages : illustrations ; 24 cm. Includes index. English ISBN: 0062517562 LCCN: 2001051542 Subjects--Topical Terms: Environmental responsibility.Environmental protection. Dewey Class. No.: 500 / H54