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Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America

Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America (map/graphic/illustration)

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Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America
Sources Hoff, R.M., 1994. Recent developments in visibility research in Canada. Air and Waste Management Association, Cincinnati, Ohio, Paper 94-MP3.06. (AAR Figure 9.18)
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Designer 		Graphical production: Philippe Rekacewicz and Emmanuelle Bournay (GRID-Arendal)
Appears in AMAP Assessment Report: Arctic Pollution Issues
Published 1998
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