ELECTROSTATIC PRECIPITATOR EFFICIENCY CALCULATIONSLEDBETTER JO.1978; J. AIR POLLUT. CONTROL ASS.; USA; DA. 1978; VOL. 28; NO 12; PP. 1228-1229; BIBL. 6 REF.Article

A BRIEF CRITICISM OF OPACITY REGULATIONSLEDBETTER JO.1982; J. AIR POLLUT. CONTROL ASSOC.; ISSN 0002-2470; USA; DA. 1982; VOL. 32; NO 4; PP. 393; BIBL. 2 REF.Article

OBSCURATION VERSUS AEROSOL CONCENTRATIONLEDBETTER JO; CEREPAKA BP.1980; J. ENVIRONMENT. SCI. HEALTH, A; USA; DA. 1980; VOL. 15; NO 2; PP. 173-181; BIBL. 11 REF.Article

STACK EMISSIONS FROM REFURE-DERIVED FUEL ADMIX TO BOILER COAL.JACKSON JW; LEDBETTER JO.1977; J. ENVIRONMENT. SCI. HEALTH, A; U.S.A.; DA. 1977; VOL. 12; NO 9; PP. 465-473; BIBL. 4 REF.Article

HYDROCARBON EMISSIONS FROM REFINERY WASTEWATER AERATIONRICHARDSON CP; LEDBETTER JO.1978; INDUSTR. WASTES; USA; DA. 1978; VOL. 24; NO 4; PP. 26-28; BIBL. 17 REF.Article

THE JET FILTER. A SINGLE-STAGE SIZE-SELECTIVE SAMPLER FOR AIRBORNE PARTICULATES = LE FILTRE A JET. UN DISPOSITIF D'ECHANTILLONNAGE A UN ETAGE, A SEPARATION GRANULOMETRIQUE, POUR LES PARTICULES EN SUSPENSION DANS L'AIRLEDBETTER JO; FISH BR.1972; AMER. INDUSTR. HYG. ASS. J.; U.S.A.; DA. 1972; VOL. 33; NO 2; PP. 90-93; BIBL. 6 REF.Serial Issue

DOWNWASH OF GAS VENTED FROM TOP OF CUBICAL BUILDING MODELOSBORNE MC; LEDBETTER JO; ATKINS PR et al.1982; AM. IND. HYG. ASSOC. J.; ISSN 0002-8894; USA; DA. 1982; VOL. 43; NO 6; PP. 466-469; BIBL. 7 REF.Article

HEALTH HAZARDS FROM WASTEWATER TREATMENT PRACTICESLEDBETTER JO; HAUCK LM; REYNOLDS R et al.1973; ENVIRONMENT. LETTERS; U.S.A.; DA. 1973; VOL. 4; NO 3; PP. 225-232; BIBL. 7REF.Article