By Gene Lyons
Updated January 15, 1993 at 05:00 AM EST

The Dream at the End of the World is a smartly written account of post-World War II expatriate Tangier. Michelle Green evokes the artists and socialites who, with Paul Bowles as their polestar, flocked to Morocco in the ’50s and ’60s for the abundant drugs, seedy exoticism, and erotic attractions. This is the first overview of the Bohemian boomtown where, it was said, ”nothing is true, everything is permitted.” A