00000nam##2200000za#4500 9.609914 CaOODSP 20200331114850 ta 150406|1992||||xxc||||| f|0| 0 eng|d 0-660-12018-6 1188-2964 CaOODSP eng n-cn--- NM97-2/1-2E Canada. National Museums of Canada. National Museum of Science and Technology. Building a digital network: data communications and digital telephony, 1950-1990 / by Bryan Dewalt. Ottawa - Ontario : National Museums of Canada. 1992. 70p. : figs., references ; 28 cm. Transformation series 1188-2964 2 Résumés en français Softcover Dewalt, Bryan Building a digital network (CaOODSP)9.860316 Transformation series, 1188-2964 2 (CaOODSP)9.514837