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1Varanasi, India : Indian Association for Air Pollution Control,v. : ill.
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2Santa Barbara, Calif. : Air Pollution Control Association.v. : ill. ; 28 cm.
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3Bruxelles : l'Institut royal météorologique de Belgique,Ceased with issue for Dec. 1972.
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4Düsseldorf, Springfield, Va., published for the Environmental Protection Agency [etc.] by Verein Deutscher Ingenieure; for sale by the National Technical Information Service.v. 28 cm.
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5Düsseldorf [Deutscher Kommunal-Verlag]v. ill. 30 cm.