00000nas 2200000zi 4500 9.938921 CaOODSP 20240603140858 m o d f cr ||||||||||| 240603d19801993oncuu m o f0###a0eng|d CaOODSP eng rda CaOODSP n-cn-on En57-61E-PDF Ontario region technical notes. Ontario region technical notes / Atmospheric Environment Service, Ontario region. ORTN [Toronto] : Environment Canada, Atmospheric Environment Service = Environnement Canada, Service de l'environnement atmosphérique, [1980?]-1992. Irregular text txt rdacontent computer c rdamedia online resource cr rdacarrier Ceased with: 93-2 (May 1993). Digitized edition from print [produced by Environment and Climate Change Canada]. Description based on: 89-2 (June 1989). Meteorology Ontario. Météorologie Ontario. Canada. Atmospheric Environment Service (Ontario Region)‏, issuing body.