The University of Nebraska Press is utilizing Docutech technology to make some out-of-print books available again. All on-demand titles are produced in paperback editions with the complete textual contents of the original editions. Illustration quality may vary somewhat from the originals. These on-demand editions are sold on a non-returnable basis and are not eligible for trade discounts. They are available from the University of Nebraska Press and Ingram Book Company. For more information please contact the University of Nebraska Press.