FILE - In this Tuesday, April 21, 2015, file photo, an employee works at a bookstore in Buenos Aires, Argentina. Buenos Aires is the city with more book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano, File)
FILE - In this Monday, April 20, 2015, file photo, customers walk around the El Ateneo Grand Splendid bookstore located in a former theater in Buenos Aires, Argentina. Buenos Aires is the city with the most book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano,File)
FILE - In this Tuesday, April 21, 2015, file photo, a book with the photo of Argentine writer Jorge Luis Borges, center, lays on display at a bookstore in Buenos Aires, Argentina. Buenos Aires is the city with the most book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano,File)
FILE - In this Tuesday, April 21, 2015, file photo, a customer reads a book at a bookstore in Buenos Aires, Argentina. Buenos Aires is the city with the most book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano, File)
FILE - In this Tuesday, April 21, 2015, file photo, bookstore manager Humberto Lettieri looks at his cat, Enzo, at his bookstore in Buenos Aires, Argentina. Buenos Aires is the city with the most book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano, File)
FILE - In this Tuesday, April 21, 2015,file photo, Sebastian Grimberg reads a book in the subway in Buenos Aires, Argentina. Buenos Aires is the city with the most book shops per capita of any capital city in the world, according to a recent study released by the World Cities Culture Forum, a collaborative network of global cities with a focus on the importance of their cultural offerings. (AP Photo/Victor R. Caivano, File)