00697nam 2200169z- 450 9910712605703321(CKB)5470000002496110(EXLCZ)99547000000249611020230509c1987uuuu -u- -engOperational Characteristics Study : Columbus, Ohio ProgramAnn Arbor, MichStandards Development and Support Branch, Emission Control Technology Division, Office of Mobile Source, Office of Air and Radiation, U.S. Environmental Protection AgencyOperational Characteristics Study BOOK9910712605703321Operational Characteristics Study : Columbus, Ohio Program3263202UNINA