00521nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001300084100001900097245014000116260004700256300001700303650002000320650002300340IN-BaIIA211028s9999    xx            000 0 eng d  a0-226-45805-9  cIIA Library  a501bKUH  aKuhn, Thomas S 4aThe essential tensionbselected studies in scientific tradition and changecThomas S Kuhn                                                aChicagobUniversity of Chicago Pressc1977  axxiii, 366p.  aCollected works  aScience philosophy