http://tags.library.upenn.edu/tag/public_domain+free_culture PennTags Feed for /tag/public_domain+free_culture PennTags Feed http://tags.library.upenn.edu/makerecord/voyager/34439 http://tags.library.upenn.edu/makerecord/voyager/34439 Free culture : the nature and future of creativity / Lawrence Lessig. <p>argument of the book</p> <p>analysis</p>