The who, why and wherefore of the Great Wall, this marvelous history demolishes myths (no, the wall is not a continuous structure of great antiquity, much of it was built in the 1600s) with fresh insight and wit. A professor at Cambridge and translator, Lovell uses the Chinese tendency for wall-building and xenophobia as a metaphor and vehicle to understand Chinese history and character.  (CHN308, $15.00)