Suber, Peter2011-02-141998Peter Suber, Preface and Introduction, in The Case of the Speluncean Explorers: Nine New Opinions (1998).0415185467978-0415185462http://nrs.harvard.edu/urn-3:HUL.InstRepos:4725112en-USphilosophyphilosophy of lawJournal Article2011-02-14