Revised and expanded edition for the North American market (first edition published in 1997 by Open University Press). The first book to provide direct evidence for the relative effectiveness of... This description may be from another edition of this product.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.