00000nam 2200000zi 4500 9.949311 CaOODSP 20250320092731 m o d f cr bn||||||||| 250320e19471229onc o f000 0 eng d CaOODSP eng rda CaOODSP En57-56/31-1947E-PDF Thomson, Andrew, author. Experimental frontal contour analyses / Andrew Thomson, Controller. [Toronto] : Meteorological Division - Department of Transport - Canada, 29 Dec 47. 1 online resource (2 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier TEC ; 31 Caption title. Digitized edition from print [produced by Environment and Climate Change Canada]. "The message will state in plain language the air masses to which the frontal contours refer--Page [1]. Fronts (Meteorology) Experiments. Exchange of meteorological information. Fronts (Météorologie) Expériences. Échange d'informations météorologiques. Canada. Meteorological Division, issuing body. TEC ; 31. (CaOODSP)9.934253 PDF 99.4 KB https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-56-31-1947-eng.pdf 672572425 CIR-1365