Search Results       Your search for [subject]Air--Purification--Equipment and supplies--Congresses returned 1 record.           Catalytic control of air pollution : ACS symposium series, _ Chemical Congress of North America (4th : 1991 : New York, N.Y.). by Summers, Jerry C., 1942-; Washington: American Chemical Society, 1992. Subject: Air--Purification--Equipment and supplies--Congresses; Automobiles--Catalytic converters--Congresses; Catalysis--Congresses.          Add to Book Cart Relevance: 30.88%