In this book, Zyler & his friend, Joey, learn about the relationship between the value of an item and its availability. On a very hot day, there is no water available to drink, and water at a lemonade... 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.