http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"West Grayer lives in a world where every person has a twin, or Alt. Only one can survive to adulthood, and West has just received her notice to kill her Alt"--Provided by publisher.
9780375970931 (hardcover library binding)