It is common to consider an area of science as a system of real or sup- posed truths which not only continuously extends itself, but also needs periodical revision and therefore tests the inventive... 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.