API 4103 VEHICLE EMISSIONS SURVEILLANCE STUDY API 4102 The Economic Effectiveness of Mandatory Engine Maintenance for Reducing Vehicle Exh... API 4101 THE ECONOMIC EFFECTIVENESS OF MANDATORY ENGINE MAINTENACE FOR REDUCING VEHICLE EXHA... API 4100 CHEMICAL IDENTIFICATION OF THE ODOR COMPONENTS IN DIESEL ENGINE EXHAUST API 4097 kinetics of Oxidation and Quenching of Combustibles in Exhaust Systems of Gasoline Engin... API 4096 The Effects Of Chronic Exposure To Low Levels Of Carbon Monoxide On The Cardiovascu... API 4095 1970 ATMOSPHERIC REACTION STUDIES IN THE NEW YORK CITY AREA VOLUME III WILLOWBROOK G... API 4094 1970 ATMOSPHERIC REACTION STUDIES IN THE NEW YORK CITY AREA VOLUME II BRONX GROUND D... API 4093 1970 ATMOSPHERIC REACTION STUDIES IN THE NEW YORK CITY AREA VOLUME I PROGRAM DESIGN ... API 4092 FIELD STUDY FOR INITIAL EVALUATION OF AN URBAN DIFFUSION MODEL FOR CARBON MONOXIDE API 4091 OPTICAL STUDIES OF AUTOMOTIVE AND NATURAL HAZES: SCATTERING FROM SINGLE PARTICLES - FIN... API 4089 A SURVEY OF AVERAGE DRIVING PATTERNS IN THE LOS ANGELES URBAN AREA BASED UPON DAT... API 4088 A SURVEY OF AVERAGE DRIVING PATTERNS IN SIX URBAN AREAS OF THE UNITED STATES: SUM... API 4087 A SURVEY OF AVERAGE DRIVING PATTERNS IN THE NEW YORK URBAN AREA API 4086 A SURVEY OF AVERAGE DRIVING PATTERNS IN THE CINCINNATI URBAN AREA API 4085 A SURVEY OF AVERAGE DRIVING PATTERNS IN THE MINNEAPOLIS-ST PAUL URBAN AREA API 4084 A SURVEY OF AVERAGE DRIVING PATTERNS IN THE HOUSTON URBAN AREA API 4073 Gas-Liquid Flow in pipelines API 4070 Annual Report ECONOMIC IMPACT OF AIR POLLUTANTS ON PLANTS VOLUME II API 4069 ANALYSIS OF LOS ANGELES ATMOSPHERE REACTION DATA FROM 1968 AND 1969 API 4065 A PRACTICAL, MULTIPURPOSE URBAN DIFFUSION MODEL FOR CARBON MONOXIDE API 4064 VOL 1 Annual Report - ECONOMIC IMPACT OF AIR POLLUTANTS ON PLANTS - VOLUME I API 4063 VOL I TIME-TEMPERATURE HISTORIES OF SPECIFIED FUEL SYSTEMS VOLUME I API 4062 INVESTIGATION OF PASSAGENGER CAR REFUELING LOSSES