00000nam 2200000zi 4500 9.898117 CaOODSP 20221107174744 m o d f cr bn||||||||| 210330e197310 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- Co24-3/9-7-1973E-PDF Keefer, T. A. J., author. Forecasting intra-provincial voice circuit requirements / by T.A.J. Keefer, Needs and Environmental Research Group. [Ottawa] : [Communications Research Centre], October 1973. 1 online resource (15 pages, 17 unnumbered pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier DLDCNS report ; no. 7 At head of title: Domestic long-distance communication network study, communication systems engineering. Imperfect copy: tables 4-7 wanting. Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Some pages rotated in this copy. Includes bibliographical references. Issued also in printed form. Telecommunication systems Canada. Telecommunication Switching systems. Systèmes de télécommunications Canada. Télécommunications Systèmes de commutation. Communications Research Centre (Canada), issuing body. DLDCNS report ; no. 7. (CaOODSP)9.882842 PDF 2.23 MB https://publications.gc.ca/collections/collection_2021/isde-ised/co24/Co24-3-9-7-1973-eng.pdf