The world's oceans cover just over 70.8 per cent of the Earth's surface, and yet we know more about the moon then what lies beneath these dark waters. As early as 5000 BC, efforts have been made to... 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.