000 01756cam  2200301za 4500
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008150406|1994||||xxc|||||     f|0| 0 eng d
020 |a0-662-22635-6
040 |aCaOODSP|beng
043 |an-cn---
0861 |aEn49-8/7-4E
1101 |aCanada. |bEnvironment Canada. |bEnvironmental Protection Service.
24510|aNational urban air quality trends, 1981-1990 / |cby Tom Furmanczyk. Issued by the Pollution Data Branch, Response Assessment Directorate.
260 |aOttawa - Ontario : |bEnvironment Canada. |c1994.
300 |axiv, 57p. : |bfigs., graphs, references, tables ; |c28 cm.
4901 |aEnvironmental Protection series. Urban pollution|vEPS 7/UP/4
500 |a"This is the eighth in a series of reports issued by Environment Canada on ambient air quality trends. Its purpose is to report trends in the ambient air quality data collected through the National Air Pollution Surveillance (NAPS) Network and to identify significant changes by statistical and other forms of analysis."--Introduction.
5203 |aThis is the eighth in a series of reports issued by Environment Canada on ambient air quality trends. Its purpose is to report trends in the ambient air quality data collected through the National Air Pollution Surveillance (NAPS) Network and to identify significant changes by statistical and other forms of analysis.--Introduction
563 |aSoftcover
590 |a96-30|b1996-07-26
69007|aAir quality|2gcpds
7201 |aFurmanczyk, Tom
7760#|tNational urban air quality trends, 1981-1990 / |w(CaOODSP)9.918974
830#0|aEnvironmental Protection series. Urban pollution ;|vEPS 7/UP/4|w(CaOODSP)9.514583