At its Android and Chrome event in San Francisco today, Google announced that it is bringing textbooks to the Google Play store so students will be able to purchase and rent their textbooks for their Android devices and for reading on the web.  The company has partnered with five major textbook publishers to launch this service. These partners are Pearson, Wiley, Macmillian Higher Education, McGraw-Hill and Cengage Learning. Google says it will have a "comprehensive selection" of textbooks from these publishers in the store that will cover subjects like law, math and accounting, but it did not announce exact numbers.