Prehistoric Life On Earth Hard Cover Book Dinosaurs Ysel Press Branner Press Kai Peterson Approximately 5-1/2x8-1/2 inches. G/VG, former library copy has some writing in it, a few pages embossed by library. 163 pages, with many illustrations. Written by Kai Peterson, illustrated by Verner Hancke, foreward by DR Edwin H Colbert, edited adapted and supplemented by Goerg Zappler. Originally edition was published in 1961. This edition was published by The Ysel Press in Holland with cooperation with The Branner Press Corp. New York, undated. Nice book.