A method and device for treating exhaust gases of {TAIL ~ an internal combustion engine} with a reducing agent introduced into {HEAD ~ the exhaust gases} 
A method and device for treating exhaust gases of { TAIL ~ an internal combustion engine } with a reducing agent introduced into { HEAD ~ the exhaust gases }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD