This is the Vol 1 and Vol 2 editions, before MMW changed to the single edition. The page numbers that are assigned to you will be different, but all I did was look in the table of contents and find whatever historical period I needed. At this price, beats buying the new edition or getting the reserve.$10 for each volume or $15 for both.I also have some old Chang readers, Bhagavad Gita, Buddhism in Chinese History, and Rise of Islam.