00000nam 2200000zi 4500 9.889327 CaOODSP 20221107172243 m o d f cr bn||||||||| 200709s1972 onc o f000 0 eng d CaOODSP eng rda CaOODSP En32-23/1972E-PDF Cartographic support service. [Burlington, Ontario] : [Canadian Hydrographic Service], [1972] 1 online resource (13 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Caption title. Digitized edition from print [produced by Environment and Climate Change Canada]. "Up until the early 1960's, the Canadian Hydrographic Service relied completely on the Surveys and Mapping Branch of Mines and Technical Surveys for cartographic support service. This service included colour negative preparation, photo-mechanical processing, colour proofing and ozalid printing"--Page [1]. Maps Reproduction. Cartography. Cartes géographiques Reproduction. Cartographie. Canadian Hydrographic Service, issuing body. PDF 912 KB https://publications.gc.ca/collections/collection_2020/eccc/en32/En32-23-1972-eng.pdf