Portada del libro

http://press.uchicago.edu/ucp/books/book/chicago/C/bo3629529.html

https://books.google.es/books/content?id=5S6_919wx6wC&printsec=frontcover&img=1&zoom=5&edge=curl&imgtk=AFLRE72akeeVQj6N_qiD-83sAX-Bq29S830-4VkCEk8id3BEV6_mU5mAGA4fyWQnt4WrWke96U2tsI8Mez17aUFitFYiAFGEL6af5eoorj7hZ1OjH6Yla3zJWaJklgcc62pPjy2I88ix