00806nam0-22002891i-450-9900009792704033210-226-11857-6000097927FED01000097927(Aleph)000097927FED0100009792720000920d1972----km-y0itay50------baengInvisible CollegesDiffusion of Knowledge in Scientific CommunitiesDiana CraneChicago [etc.]University of Chicago Press1972x, 213 p.22 cmScienza e società507Crane,Diana45985ITUNINARICAUNIMARCBK9900009792704033211E-0629970FI1FI1Invisible Colleges353266UNINAING01