Spectrum is a complete six-level course in English that teaches readers to communicate in real-life situations. The language presented is authentic and useful providing rich input for practice. The books are filled with opportunities for personal expression and activities that stimulate real communication.Good Condition: Minimal damage to the cover dust jacket may not be included minimal wear to binding most of the pages undamaged(e.g. minimal creases or tears) highlighting / underlining acceptable on books as long as the text is readable and markings are not excessive no missing pages. May be a former library book with usual treatments(e.g. mylar covers call stickers stamps card pockets barcodes or remainder marks). Extra components such as CDs DVDs figurines or access codes are not included. ISBN: 9780138301910 ISBN10: 0138301913 Contributors: Byrd Donald R. H. Costinett Sandra Warshawsky Diane