00794nam0-22002891i-450-99000050902040332120090317113106.0000050902FED01000050902(Aleph)000050902FED0100005090220020821d1953----km-y0itay50------baenga-------001yyCalculating instruments and machinesDouglas R. HartreeUrbanaUniversity of Illinois Press1953©1949138 p.ill.26 cmCalcolatoriStrumenti matematici510.78Hartree,Douglas RaynerITUNINARICAUNIMARCBK99000050902040332110 P.T. 143467DINELDINELUNINA