This textbook, titled "Approximations for Digital Computers," was published in 1955 by Princeton University Press as part of the Princeton Legacy Library series. It is a hardcover book containing 212 pages and written in English by Cecil Hastings, Jeanne T. Wayward, and James P. Wong. The book is intended for use as a reference for those working with digital computers and covers topics such as polynomial approximation, interpolation, and numerical integration. It is a valuable addition to any library and is sure to be of use to those interested in the field.