20th century history: c 1900 to c 2000 Catalysis Computational Materials Science Engineering Thermodynamics, Heat and Mass Transfer Force and energy Heat engineering Heat transfer Imaging Techniques Imaging systems Mass transfer Materials Materials for Energy and Catalysis Materials science—Data processing Materials—Analysis Mathematical Physics Mathematical physics Porous Materials Porous materials Soviet Komsomol Stalinism Thermodynamics USSR Vsesoi︠u︡znyĭ leninskiĭ kommunisticheskiĭ soi︠u︡z molodezhi political youth