Exhaust gas

https://www.wikidata.org/wiki/Q320173

Field Hierarchy

Parent
Physics 33M papers	Chemistry 28.9M papers	Engineering 25M papers	Organic chemistry 12.9M papers
Thermodynamics 5.1M papers		Waste management 1.6M papers
Current
Exhaust gas 21k papers
Child
Exhaust gas recirculation 17.5k papers	Diesel particulate filter 7,475 papers	Diesel exhaust fluid 2,547 papers	Catalytic converter 1,970 papers
Naturally aspirated engine 1,854 papers		Exhaust manifold 1,540 papers

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History