How many are there in a book? <a href=" http://www.barberinovaldelsa.net/organi-istituzionali ">prototype iv 33 ab reviews</a> Apple Inc this week said its revenue in Greater China, which also includes Hong Kong and Taiwan, slumped 43 percent to $4.65 billion from the previous quarter. That was also 14 percent lower from the year-ago quarter. Sales were weighed down by a sharp drop in revenues from Hong Kong. "It's not totally clear why that occurred," Cook said on a conference call with analysts.