00649nam 2200169z- 450 9910712382503321(CKB)5470000002492304(EXLCZ)99547000000249230420230509c1977uuuu -u- -engHeavy-duty fuel economy program: phase I : specific analysis of certain existing dataAnn Arbor, MichiganEnvironmental Protection Agency, Office of Air and Waste ManagementHeavy-duty fuel economy programBOOK9910712382503321Heavy-duty fuel economy program: phase I : specific analysis of certain existing data3318328UNINA