Impact by Douglas Preston. Signed first edition in dust jacket. Publisher: Tom Doherty, New York, (2012). Signed on the title-page. First edition with 1-10 number line and copyright notation: “First edition: January 2012” Dust jacket and binding are in fine condition. Jacket flap with price of $25.99. 364 pages. 6 ½ x 9 ½ inches. Inventory #24-085. Price: $100.