someone with a little more time than me can probably find a full .pdf I don't have one handy but http://www.amazon.com/Class-Through-American-Status-System/dp/0

someone with a little more time than me can probably find a full .pdf I don't have one handy but http://www.amazon.com/Class-Through-American-Status-System/dp/0671792253 http://www.amazon.com/Class-Through-American-Status-System/d... data gathering is largely the problem there--so we address it through round about means.